The 2nd Monitor

skiwi

12:00 PM

Holy cow, that was fast... I suspect it wasn't by someone from the chatroom right now though

Morwenn

@skiwi Needs more Jesus.

Donald.McLean

@skiwi I didn't even get a chance to look at it before the answer came up.

Stack Exchange

0

Q: Java Interview Coding Exercise

Recently I have given an interview to a widely well-known technology firm. The first interview was general and it went well but they rejected based on some technical things. They did not mention it so I expect may be due to my Coding Exercise that I submitted is not well designed. It would be gr...

skiwi

@StackExchange Has no code in the question

nhgrif

12:22 PM

This is a non answer, right?

0

A: Creating a better NSLog

Why just don't use CocoaLumberjack? It's "a fast & simple, yet powerful & flexible logging framework for Mac and iOS." I used own defined macros before. #ifdef DEBUG #define DebugLog( s, ... ) NSLog( @"<%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE...

skiwi

@nhgrif Doesn't look like one

rolfl

Time foe a good morning!

Monking.

nhgrif

Doesn't look like an answer or doesn't look like a non-answer?

skiwi

Monmking @rolfl

@nhgrif Doesn't look like an answer imo

nhgrif

Right.

skiwi

12:23 PM

3

A: Field class used by my trading card game

First, I don't think Field is a good name – it is really generic and doesn't reveal any information. Now a few notes on your unit tests: Instead of duplicating the setup Field field = new Field(6) in every test, you could use a @Before annotated setup method: public class FieldTest { priva...

He raised a good point about Optional<T>...

Stack Exchange

0

Q: Rotating the String -Codechef-Need Help in Optimizing the Code

below is the code for the problem (http://www.codechef.com/problems/ROTSTRNG/) ,i have made use of String function equals in my solution,Solution is working fine for all the test inputs but still iam getting a TLE while I submit to the Judge,Need your ideas on optimizing the code import java.io....

java strings

Morwenn

@rolfl Good monking to you, sir.

rolfl

Right, I woke up this morning to the busiest mod morning ever (for me).

skiwi

(Note I can still return Optional<T> even if I don't store it as a Optional<T>[]

rolfl

So, general statement about Not an Answer flags ....

0

A: Creating a better NSLog

Why just don't use CocoaLumberjack? It's "a fast & simple, yet powerful & flexible logging framework for Mac and iOS." I used own defined macros before. #ifdef DEBUG #define DebugLog( s, ... ) NSLog( @"<%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE...

^^^^^^ It is an answer.

Just a bad one.

nhgrif

12:25 PM

I'm going to argue it's not an acceptable answer on CodeReview.

rolfl

It can be dealt with using the appropriate tools that you (the community) have available.

nhgrif

And if I need to open a meta discussion, I will.

rolfl

OK, but you will find the answer is:

downvote, edit, comment, all of the above

nhgrif

But simply recommending all of my code be replaced by a library, I don't think that's really acceptable here.

rolfl

Yes it is

It can be expressed differently, better, and with more logic/reasoning

If you don't like it, flagging it as NAA is not the right response

Donald.McLean

12:26 PM

And maybe some example of how to use the library in your specific case.

rolfl

Flagging it means "Only a moderator can solve this problem".

This is not true (in this case).

nhgrif

I flagged it as not an answer because I don't think it's an answer.. not because I don't like the answer and want it removed by any means necessary.

Moreover, skiwi agreed with me that it wasn't an answer.

That doesn't it make us right...

rolfl

@nhgrif then you are both welcome to downvote it as much as you can

You have already commented.

You can also edit it if you want, to improve it.

nhgrif

The library he linked and his example macro (which he doesn't even explain what it does) doesn't even match the format of the example output I put in the question.

rolfl

I am not saying it is a good answer! I am just saying it is an answer.

If you downvote it, (and others do as well), then it hets put in different queues, and the user gets the message, and it gets improved, etc.

skiwi

12:33 PM

@rolfl An NAA flag doesn't put burden on the mods, right? It is a community thing if I'm not mistaken (like closevotes, etc.)?

nhgrif

Well, maybe someone else can provide a comment better explaining the problems with the code... but I really don't like the precedent of linking to libraries being an acceptable answer when that's all the answer is.

I realize that in some cases, using a library really is the best thing to do when you've got a really complicated project and you're talking about replacing numerous files and hundreds of lines of code with a well-tested library that does exactly what you want, but that should also come along with pointing out the issues the original code actually does have and why the library is better.

This particular answer doesn't point out what's wrong with my answer, doesn't explain to me why the library would be better than my code (just that the library was better than his code)

And my code is 20 lines. The library he's linking to is 21 files

Stack Exchange

0

Q: Writing an interface for networking in an embedded system

I'm writing a driver in C for a WiFi module attached to a PIC18 microcontroller. I want to implement some functions that I'm familiar with in computer application level programming like Window's API recv function for WinSock. The module itself already implements the WiFi communication protocol an...

c networking embedded

0

Q: Disk Scheduling Algorithm

Aim is to provide total head movement in different disk scheduling algorithms namely FCFS, SSTF, LOOK, C-LOOK, SCAN, C-SCAN. #include <iostream> #include <cstdlib> #include <conio.h> #include <math.h> using namespace std; int compare (const void * a, const void * b) { if ( *(int*)a < *(int*...

c++

Simon André Forsberg

@skiwi It is both handled by mods and the community. The community alone can't mark the flag as "finished" though.

In this case, I agree with @rolfl (Monking!), it is an answer. If you don't want to use the library, add a comment stating that (the fact that the library is 21 files when all you want is just a small portion of it is a good argument to not add it)

Btw, @rolfl, you said it snowed in Canada yesterday? Today, it's > +20 C here and feels like summer :)

nhgrif

I'm not a mod, so my opinion literally couldn't matter less, but a "answer" that is nothing more than a link to a library, has to at a minimum, point out the problems with code in the question and explain why the library would be better for it to actually be an answer in my opinion. And here's why...

This guy says he tried writing his own logging macro, and says the library worked better for him (doesn't explain why)

But let's suppose his macro was bad.

skiwi

@SimonAndréForsberg Ah ok, so it differs from VLQ then?

nhgrif

12:43 PM

And let's also suppose he hasn't looked in the library at all (which is a safe assumption as long as he's not explaining anything about the library or why it's better)

How does he know that the relevant parts of that library aren't written exactly the same as my code?

He doesn't even comment on the efficiency of the library versus my code--only about the efficiency of the library versus some code he had previously written--and his code isn't the question.

Simon André Forsberg

@skiwi I think @rolfl can answer that better than me.

skiwi

I do tend to agree with NAA, because it doesn't review the code in the question...

rolfl

11

Q: What are the correct action to take when there is a 'bad' answer?

When there is an answer you feel is 'bad', what are the correct actions to take? For example, the question: Similar methods using loops has an answer: If you always use both functions together it might be faster to run the code in one pass instead of two, but here it is perfectly fine to...

discussion answers voting flagging

nhgrif

I was reading:

13

Q: Short answers and code-only answers

What should we do with: Short answers (for example, "I suggest you use [hyperlink to this standard API] instead.") Code-only answers (for example, an improved version of the code in the OP) Such answers could be improved (e.g. by adding an explanation of why the suggestion is helpful). Is it...

discussion site-policy answers

Points 1 and 3 on the accepted answer on when to flag.

While this answer isn't strictly code-only, the answer certainly makes zero reference to my code other than the very weak link that it's about logging.

And if this answer is an answer, it can be 100% directly copy & pasted to EVERY question about logging.

Moreover if this is an acceptable answer that can be marked as accepted, every other Objective-C question about logging now has to be marked as a duplicate because the answer is to use this library.

skiwi

You can't just tell advice someone to change their whole codebase

nhgrif

12:49 PM

Well... you can.

I'm not going to argue that.

Sometimes it's very necessary.

This week I'll be starting a rewrite of an app that will probably take 2 weeks or so... because we're changing the whole codebase.

BUT... we're not doing so based on a 30 minute review of the situation.

Simon André Forsberg

@nhgrif Questions on CR are rarely duplicates. Whether or not you accept the answer is up to you (I doubt you will). All we're (me and monkey) is saying is that it does not need to be flagged as NAA. The poster tried to help you by suggesting to use a library. Whether you like that or not is up to you.

nhgrif

There was a massive list of reasons why it was needed to be done before it was done.

But Simon, how is it helpful if he doesn't explain WHY the library is better?

rolfl

Somewhat related ... I asked a question yesterday, the answer (a good one) told me to use a different program entirely.....

1

A: Directory of Snapshots

Your if conditions can be simplified. Instead of this: if ( `tcsh -f -c "ls -1 DSC*.jpg >& /dev/null" && echo yes` == "yes" ) then You could write like this: if ( `ls DSC*.jpg >& /dev/null && echo x` != "" ) then That is: you don't need to spawn a tcsh sub-shell you don't need the -1 for ...

nhgrif

True or false: This answer could be copy & pasted to EVERY Objective-C question about logging.

rolfl

True, and it should be downvoted each time.

nhgrif

12:53 PM

@rolfl That answer is MUCH better and clearly different. He comments on your code first, points out some possible improvements. Then says you could use a different program, and here are some of the differences that is why I'd prefer the other program.

Simon André Forsberg

@nhgrif I never said that the answer was helpful.

rolfl

@nhgrif - if a person has a pattern of creating bad answers (negative votes, etc) then they will be asnwer-banned automatically

nhgrif

If you agree that it should be downvoted every time, why am I the only person that has downvoted this answer?

rolfl

By a mod deleting the answer, that will never kick in.

Because people value their reputation

and a downvote costs you one.

nhgrif

1.

But if 1 reputation is more important then showing the answerer that, at a minimum, this answer needs more imporvement, then how is the downvoting system really an acceptable alternative to flagging?

Simon André Forsberg

12:56 PM

I haven't downvoted it because I know too little about the subject. And the answer already has two downvotes now, I don't see how adding another one would help.

rolfl

It would help him score a 'peer pressure' badge ;-)

nhgrif

Simon, you don't have to know anything about the subject to understand the reasons I'm talking about.

skiwi

I'm a bit confused about this discussion... Couldn't that be applied to all answers? (Except the real offence ones)

nhgrif

He's suggesting I use a library without telling me what's wrong with my code or why that library would be a better option.

skiwi

So NAA could effectively be replaced by a "this answer contains offensive content"? or other already existing reasons?

Simon André Forsberg

12:58 PM

I'm thinking of a parallel to Java here, if I saw code which uses a lot of System.out.println, and the answer suggested to start using Log4j, that would be a valid answer IMO. And in some cases, it would probably be a helpful one.

rolfl

Not-an-answer flags are moderator attention flags.

Simon André Forsberg

@skiwi There are separate spam/offensive flags for that.

rolfl

They create a big icon on my toolbar, and the only way to get rid of it is to delete the question, decline the flag, or mark it as kelpful, and don't do anything anyway.

What you are doing is effectively saying "I don't want to deal with it, so I am going to make a moderator have to pass a binding vote".

nhgrif

Simon--we're talking about an answer that doesn't point out anything wrong with the original code, suggests some of the original code be changed, and doesn't explain why.

And rolfl, that's not what I'm doing.

rolfl

If you want moderators to pass binding votes for everything, then there will be a mess

nhgrif

1:00 PM

Again, I marked it as a non answer because I believe that's what it is. I immediately left a comment.

rolfl

@nhgrif But you are ....

nhgrif

Then I immediately asked about it in here and skiwi agreed with my opinion of it being a non-answer.

If it is a non-answer, it should be flagged.

rolfl

You are saying "This is something a moderator HAS TO DEAL WITH ....

nhgrif

If anything, my opinion of what constitutes a non-answer is wrong.

I'm not skirting responsibility.

rolfl

I have to get breakfast before it gets cold... back in 40.

nhgrif

1:01 PM

No, rolfl, I'm saying it's a non answer.

Flag... as non-answer.

If non-answers don't need moderator attention, remove the flag option for non-answers.

Until then, I'm marking non-answers as non-answers. Because that flag option exists, I assume the people in charge of choosing the flag answers intend it to be used when appropriate.

It should possibly be an edit, a comment, another question, or deleted altogether. "You should check out this library..." is a fine comment. It's not a fine answer, as far as I'm concerned.

Simon André Forsberg

I think this comment is a good one:

At a minimum, your answer should point out what's wrong with my code, and why I should replace 20 lines of code with a 21 file library. — nhgrif 7 mins ago

Best case scenario: The answer gets improved somehow

Worst case scenario: The answer remains, with downvotes. Is there any harm in this?

nhgrif

Right. As I said, I'd be fine with the answer if it at least explained why the library should be used.

And to the latter, I guess not. But it's a little hard to listen to a moderator say "It shouldn't be closed, it should be downvoted" and then watch them not lead by example and downvote it themselves.

amon

Oh, just saw that answer :( In it's current form, it's spam and might as well be deleted. It even reads as an advertisement: “I tried CocoaLumberjack and it solved all my problems. It's really easy to integrate it in your project”

Simon André Forsberg

@amon That thought crossed my mind too a few minutes ago...

Downvoted and applied delete vote on it

skiwi

1:20 PM

aw, I can't cast delete votes yet

Finally, completed this assignment in this game and now I can start programming (Isn't it normally said the other way around?)

Simon André Forsberg

I think I like Python. Very easy to get started with and useful for web-scraping.

And also, I love JSON :)

skiwi

JSON is very useful for quick (and -sometimes- dirty) solutions

Simon André Forsberg

@skiwi Have you ever used the Jackson Java library?

skiwi

@SimonAndréForsberg Nope

This is interesting though (unrelated): stackoverflow.com/a/23318644/2057294

Simon André Forsberg

You should :)

skiwi

1:32 PM

3

A: Is it possible to use Java 8 for Android development?

Android does not support Java 8. It only supports up to Java 7 (if you have kitkat) and still it doesn't have invokedynamic, only the new syntax sugar. If you want to use lambdas, one of the major features of Java 8 in Android, you can use gradle-retrolamba. It's a gradle build dependency that i...

Simon André Forsberg

I love it. It makes serializing POJOs so easy

"a tool that converts Java 8 bytecode back to Java 6/7" - I thought that should be possible!!

skiwi

Does Android KitKat+ officially support Java 7 now? :o That sounds new to me

Simon André Forsberg

If this works for GWT too, then I'm in heaven!

@skiwi Yes, it does since just a while ago. I saw it in some Android SO question for a couple of weeks ago.

skiwi

There is still hope!

Though I really disgust the Android framework itself

Simon André Forsberg

What's wrong with it?

skiwi

1:36 PM

Everything

Well, first of all their API tutorials are half of the time outdated, which is a major annoyance

Simon André Forsberg

almost wrote 'lol'

skiwi

Nor do their old versions denote that they are deprecated and link to the new versions

Then I find the API itself very verbose

Simon André Forsberg

I find the Android development documentation very useful (especially compared to the Python documentations I've read recently... yuck...)

skiwi

It seems that WP8 is really lightyears ahead in terms of programming framework

But can't confirm it myself

Simon André Forsberg

Sure, there were some mistakes they made in some of the APIs, but overall I like it. Especially the usage of XML files to separate things.

WP8? WordPress???

skiwi

1:38 PM

One sidenote is that we practically, for an assignment, had no time to actually learn Android, so might cause a load of frustration

Windows Phone 8

Simon André Forsberg

@skiwi Sounds more like it's your education that should be disgusted....

Windows Phone uses.... C#? Java?

skiwi

I think C#

Anyhow, Java 8 does offer some oppurtunities for Android

Simon André Forsberg

Sounds like it's time I should learn how to use Gradle... anyone here has used it?

rolfl

Catching up... but, in the mean time:

Simon André Forsberg

gradle.org/docs/current/userguide/eclipse_plugin.html - Thanks google :)

@rolfl Whoa... close queue? CR?

rolfl

1:42 PM

first post.

skiwi

@SimonAndréForsberg Yes, it works quite nice

@SimonAndréForsberg plus.google.com/+RayCromwell/posts/4WpGQYACYaC is this progress?

blog.oio.de/2014/03/31/…

github.com/WeTheInternet/gwt-sandbox

@SimonAndréForsberg Sadly I cannot test as I don't know GWT, maybe you can... once you have time?

Mat's Mug

'morning!

Stack Exchange

0

Q: Are there any bugs or ways to make my divisor code better?

So after coding my divisor code which I did as a practice for my GCSE stuff which I have to take soon I have decided to ask the community if there are any bugs or ways I can improve my code. The Code Is import time, math from array import * def programme(): num = input("Enter your Number: ...

python mathematics python3

Simon André Forsberg

@skiwi It does look a lot like progress, yes. We'll see when I can play around with it

@Mat'sMug Monking! / Afternoon!

skiwi

morning @Mat'sMug

Simon André Forsberg

1:50 PM

It's so strange that it's 4 PM here and 10 AM (or is it 9 AM?) there...

@rolfl Apparently I look at the review queues not often enough.

skiwi

@SimonAndréForsberg Do you happen to have some GWT questions around that show some of the syntax and usage?

almost 10am here

Hello again :)

This hurts:

Waiting hurts?

1:55 PM

Arrays.sort(stringArray, new Comparator<String>() {
    public int compare(String s1, String s2) {
        return s1.length() - s2.length();
    }
});

Mat's Mug

haha

rolfl

Hey @Mat'sMug ....

Mat's Mug

could anyone familiar with O(n) notation check out codereview.stackexchange.com/q/48291/23788, I don't understand how my suggestion/answer could result in the exact same execution time (assuming OP did what I did when they "merged" the loops)... he's running 2 loops, I'm only running one, I'd expect execution time to be pretty much half of the original code...

Morwenn

new Comparator()? Isn't there any easier way to create a lambda that satisfies and interface?

Mat's Mug

@skiwi wouldn't Comparer be a better name?

skiwi

1:56 PM

@Morwenn Not when this book was written

Morwenn

What about Java8?

skiwi

Luckily nowadays it's Arrays.sort(stringArray, (s1, s2) -> s1.length() - s2.length());

Or...

Mat's Mug

yay lambdas!

Morwenn

How do lambdas play with interfaces?

skiwi

Arrays.sort(stringArray, Comparators.comparingInt(str::length));

^^ Let me verify that

Mat's Mug

1:58 PM

I find it off-putting that lambda is -> and not =>

skiwi

I find it off-putting that lambda in some languages is => and not ->

Mat's Mug

what other languages use ->?

Morwenn

[](auto s1, auto s2) { return s1.length() - s2.length(); }

skiwi

I don't know, but => looks somewhat confusing in assignment in my opinion

Morwenn

lambda s1, s2: len(s1) - len(s2)

Choose your favorite syntax.

Mat's Mug

2:00 PM

anything is better than the vb.net "lambda" syntax

skiwi

Correction, correct method was: Arrays.sort(stringArray, Comparator.comparingInt(String::length));

Simon André Forsberg

@skiwi I've been wanting to post some GWT questions here, perhaps I can post the view-part of my TTT implementation.

Morwenn

\s1 s2 -> length s1 - length s2

skiwi

The \`? (code syntax` doens't like backslashes at ALL)

Morwenn

It's Haskell.

rolfl

2:03 PM

@Mat'sMug Amdahl's law .... FTW

You have not changed the O(N) operation at all ... really.

Simon André Forsberg

@Morwenn Could you say which language was which there?

Stack Exchange

0

Q: Problems with Java - FileOutputStream

I am attempting to write an address book in Java for an assignment at university and I am stuck on one bit. I am making a save button so that the user can save the people who have been entered so far to their computer, and when I am using the FileOutputStream and ObjectInputStream the program I a...

java

Mat's Mug

@rolfl help me out here, ...why/how is that?

Simon André Forsberg

I think lambda s1, s2: len(s1) - len(s2) is python?

Morwenn

I gave C++14, Python and Haskell syntaxes, in this order.

rolfl

2:04 PM

@Mat'sMug which one is faster:

skiwi

@Morwenn Java doesn't seem much worse tbh, probably until you actually store the lambda somewhere

rolfl

for (int i = 0; i < 10; i++) {
    sleep(ONE_SECOND);
}
for (int i = 0; i < 10; i++) {
    sleep(ONE_SECOND);
}

Mat's Mug

(20 seconds, assuming ONE_SECOND == 1000ms)

rolfl

Early enter... sorry, The above, or the following:

for (int i = 0; i < 10; i++) {
    sleep(ONE_SECOND);
    sleep(ONE_SECOND);
}

Mat's Mug

..right

so OP's code is unsalvageable then ;)

Christoph

2:07 PM

@Morwenn I'm totally confused about the forwarding problem you helped me with, but I have to leave chat now because of annoying social obligations. I'll see if I can catch you sometime later

rolfl

Well, the point is that, the loop condition is only a very small part of the operation time.

Morwenn

@Christoph Ok, see you later :)

Mat's Mug

(didn't mean to whore up some votes btw, it just boggled me that the OP said merging the two loops had about the same execution time)

but thanks Santa anyway!

rolfl

It is more readable as a single loop, and all...

But, from a performance perspective, the loop has almost no overhead, so, merging them saves almost nothing ..... doing less work in the loops would be good though.

skiwi

@rolfl Do you happen to know if there's a debug option that will print once a method gets inlined?

Mat's Mug

2:14 PM

gotta prep up for the twins' b-day party (2yo!), later guys!

Simon André Forsberg

@Mat'sMug So that was what I voted on!

@rolfl Speaking of loops and overhead, have you seen this one?

2

Q: Increment the cells around one in a matrix

Let's say you want to increment the cells around the position (x,y) in a square matrix m of size T. I've written the same code in a few languages. Here's the JS syntax version : if (x>0) { if (y>0) m[x-1][y-1]++; m[x-1][y]++; if (y<T-1) m[x-1][y+1]++; } if (y>0) m[x][y-1]++; if (y<T...

javascript matrix branching

Stack Exchange

0

Q: Writing Data.List's intersperse

Learn You a Haskell shows the intersperse function: ghci> intersperse '.' "MONKEY" "M.O.N.K.E.Y" ghci> intersperse 0 [1,2,3,4,5,6] [1,0,2,0,3,0,4,0,5,0,6] Note that the interspersed element only appears inside of the elements. list elem ... item ... list elem ..... item .. list ele...

haskell reinventing-the-wheel

Simon André Forsberg

I'm quite surprised btw by the little response I've had on this question, is my Python code really that good?

8

Q: We'll be counting stars

Lately, I've been, I've been losing sleep Dreaming about the things that we could be But baby, I've been, I've been praying hard, Said, no more counting dollars We'll be counting stars, yeah we'll be counting stars (One Republic - Counting Stars) The 2nd Monitor is known to be a quite star-happy...

python python3 stackexchange web-scraping beautiful-soup

skiwi

You have more upvotes as I got on my question though...

Simon André Forsberg

Yeah, the questions have plenty of up-votes, but I'd gladly trade half of them for another, more detailed answer about my code.

Why is this on-hold btw?

2

Q: Detect multiple devices in Keen.io collection

I'm trying to display data from Keen.io we're collecting from an iOS app where we report what devices of ours the app is used to communicate with. In particular I'm trying to find where there are more than one of our device. An entry from the Keen collection looks like: { "iOS_OpenUDID": "hex...

javascript

skiwi

2:22 PM

I'm always confused then if people simply don't care about the question, or if they agree with it

Morwenn

@SimonAndréForsberg The code is already good enough, there is little to add.

if stars == None should be replaced by if not stars.

In Python, comprisons with None should always be implicit :p

Yuushi

sorry, that was nitpicky :)

Morwenn

No problem.

It's the kind of review I'm not at ease with since it boils down to "rewrite your code in C++, not in C" :/

Stack Exchange

0

Q: A concurrency-safe stack structure

This is a teaching sample intended to illustrate use of mutability and list consing in F#. The structure is intended to be a thread-safe stack structure, which multiple threads can push to/pop from concurrently. Concerns: Will this actually be thread safe? Are the locks necessary? Is there an...

f#

Yuushi

yeah...I looked at it and basically had the same thought

rolfl

2:35 PM

@skiwi Yes, there is ....

oracle.com/technetwork/java/javase/tech/…

^^^ PrintCompilation

skiwi

@rolfl Cool, I've bookmarked that page... I was trying to confuse the JVM when inlining, but didn't succeed

Jeroen Vannevel

aw man, SO thinks I'm a robot

Morwenn

@SimonAndréForsberg Actually, I couldn't find anything to back up what I said about None. I'll undelete if I find something.

@JeroenVannevel Aren't you one?

Jeroen Vannevel

@Morwenn I don't think robots are evolved far enough yet to get startled the shit out of them by that chat beep

Morwenn

@JeroenVannevel That's what they want us to think.

skiwi

2:43 PM

Huh, technically I can precompile Java code on JVM bootup if I demand it to precompile all my methods?

rolfl

Possibly, yes...

Not one I have tried before

(also, I normally use the IBM JDK ... different options)

skiwi

It is something interesting to keep in mind for 3D game development

Might take a while until I get back there though

And I'm possibly still confused on inlining vs compilation

Morwenn

I'm helpless when I try to name African countries -____-

skiwi

Inlining is replacing a bytecode method call with the bytecode of the method call? And compilation is compiling bytecode of a method call to assembly?

@Morwenn South-Africa, I can name, and more

Morwenn

I can name like 15 of them, and even locate some of them on a map, but it's clearly the continent where I'm the worse.

I am better at naming micronations in Europe.

rolfl

2:52 PM

@Morwenn The problem is they change quite regularly

It is hard to keep up.

Edward

@Morwenn: I did a double-take reading this answer -- it looked like the one I was writing!

Morwenn

@rolfl Appart from Yemen (which isn't really Africa) and the Occidental Sahara, I don't know.

@Edward If I remember well, you even wrote this kind of answer on another question yesterday or today :p

rolfl

When I was a kid (in South Africa) I had to learn all the countries, and their capitals.

Morwenn

All. You mean the worlds ~200 countries?

rolfl

In the 3 weeks between getting the assignment, and writing the test ... three countries/capitals had changed.

Just africa

Morwenn

2:55 PM

Oh, ok.

Edward

@Morwenn Likely.

Jeroen Vannevel

I'll have you know I can name all the countries in North America

Edward

@rolfl You all might enjoy this online geography game.

rolfl

Dwawing attention to this post.... because it has some interesting community-building opportunities.

1

Q: Are there any bugs or ways to make my divisor code better?

So after coding my divisor code which I did as a practice for my GCSE stuff which I have to take soon I have decided to ask the community if there are any bugs or ways I can improve my code. The Code Is import time, math from array import * def programme(): num = input("Enter your Number: ...

python mathematics python3

Morwenn

@rolfl But I don't remember Africa changing a lot when I was a kid. Ex-Yougoslavia was another problem.

rolfl

2:56 PM

Hi, and welcome to Code Review. Here we welcome any answers that have valuable suggestions, even if they are small. This is a decent answer. — rolfl ♦ 5 mins ago

^^^ but, the question may need more than the answer it currently has

Rhodesia, Congo, capitals in all sorts of places...

Morwenn

@Edward My latitudes are rather correct, but my longitudes are always wrong.

Edward

@Morwenn It's rather fun, though, I thought.

Morwenn

The problem is that locations really resemble each other when the latitude is the same :/

skiwi

I'm wondering... If I have a method that gets executed a trillion times and it returns two integers in Java, what would be a better way (just a brainfart I had yesterday evening):
1) Use an `IntPair` class
2) Use an `int[]` array
3) Use a `long`
Provided that the client can use some static method (which gets inlined at some point): `Result.getFirstArgument` resp `Result.getSecondArgument`?

Simon André Forsberg

@Morwenn Writing "This code is good because (...)" could be a fine answer :)

Edward

3:00 PM

@Morwenn I actually placed one in the UK when it was actually France. Sorry. :)

Morwenn

@SimonAndréForsberg Yes, but there isn't anything that I find incredibly good either that it's worth an answer :p

@Edward I got Canada and Norway confused. Thanks to boreal forests.

Simon André Forsberg

@skiwi context-required what integers? What are the integers used for? Are they fixed to a certain range?

Confusing Canada with Norway, and UK with France? People, people, people... My European heart is broken.

Morwenn

I have a coffee to take with a square chocolate. Be right back :)

skiwi

@SimonAndréForsberg The integers can be any valid value for int.

Morwenn

@skiwi I have travelled through France and the UK, and I can say that some places really do look the same.

Simon André Forsberg

3:03 PM

Five-year-olds know geography better than you!

►

skiwi

@Morwenn It's almost as if you read that I was the one that starred your message, unless you meant to ping @SimonAndréForsberg there ^^

Simon André Forsberg

@skiwi Then I would use int[] or IntPair. Definitely not long.

Morwenn

@skiwi Yep, i totally got my ping confused :p

skiwi

@SimonAndréForsberg However the IntPair would involve creating an object a trillion times? However int[] is also an object, so doesn't make that much difference :(

Simon André Forsberg

@Morwenn Sure, some places indeed look the same IRL... but they are still in the same place, separately, if you know what I mean... :)

rolfl

3:08 PM

@Edward You got 9439 points in total.

Simon André Forsberg

@skiwi Exactly, and a long is just... not good... but oh, I know... I'm not sure if it would work for you, but can you use a mutable IntPair class and then the calling method changes the existing values of it?

void setIntPairToSomething(IntPair result)

result.setFirst(42);

skiwi

That might actually be correct performance wise now you tell about it :D

Sure it creates some extra burden, but you'll always have that if you are working with performance

Luckily it's purely theoretical

Stack Exchange

0

Q: Polling, parsing, validating and handling data cleanly and efficiently

It's time for a quick code review, good points, examples, handholding if anyone has time to spare for commenting and, yes, even nitpicking too. I wrote a short piece of code, purpose of which is to Read a resource on some predefined intervals. This resource can be at least a file or a network r...

f# system.reactive

Simon André Forsberg

@Morwenn I edited your answer, what do you think of that? Can it be undeleted?

(Also, feel free to add "Overall the code is fine")

@skiwi Performance wise, it will be the best option yes. And assuming you don't need all the trillion IntPairs at the same time, I think it's the best solution.

Edward

@rolfl Actually 9807. Try this geo-challenge

rolfl

3:14 PM

9439 was 'my' score ...

skiwi

@SimonAndréForsberg Also the other assumption would be that the calculation method takes quite some time, so much that it is not more performant to simply calculate twice and return result one in one method, and result two in the other method

rolfl

new challenge accepted

Simon André Forsberg

@skiwi Speaking of Android Framework, here's from where I got the idea: developer.android.com/reference/android/view/…

skiwi

@Edward That's an interesting, though a bit awkward interface, site

@SimonAndréForsberg I see, but then they might aswell have provided a Location object, as storagewise it's the same... possibly (atleast Location could internally implemen itself as an int[2] if it were not the same)

Chak De India

Aha!

rolfl

3:17 PM

@Edward apparently I won ......

Simon André Forsberg

@skiwi Sure, they could have used a Location / IntPair there, not sure why they didn't exactly but I don't think it matters much... What's important is that the method takes a parameter and mutates it.

@ChakDeIndia Aha! A new user. Welcome.

Edward

@rolfl Excellent! What was your score, and did any of the locations surprise you?

Morwenn

@SimonAndréForsberg I'm still not sure this is valuable advice. Unless I can back it up with a good link, I'm not going to undelete it.

Chak De India

@SimonAndréForsberg new? codereview.stackexchange.com/users/38941/chak-de-india

Morwenn

Also, I can't say "it's good overall" because I don't really know BeautifulSoup and some BeautifulSoup expert may think it's not good enough :p

Simon André Forsberg

3:19 PM

@ChakDeIndia New chat user maybe?

rolfl

Simon André Forsberg

@Morwenn Ok then :)

rolfl

@Edward At least all my guesses were on the right continents ...

2

skiwi

@SimonAndréForsberg For the usability of the android API it does, for our conversation it indeed doesn't

Chak De India

@SimonAndréForsberg Yeah

Edward

3:21 PM

@rolfl Hey, that could have been Haiti. :)

Chak De India

:-)

Malachi

and the noob bashing begins even though I am not a noob

rolfl

@Morwenn - other C++ folk ... you may be interested in this:

2

A: Perfect forwarding results in an error I don't understand

Your code review was a failure. The universal references technique is not naively applicable to virtual abstract interfaces. Do not use Args&& in the signature, use Args..., of your pure virtual interface. Inside the implementation, the last time (or only time) you use the arg use std::forward<...

Morwenn

@rolfl Yeah, we noticed a few hours ago that it was a failure.

rolfl

@Malachi I would not consider those responses to be unexpected.

They are reasonable.... in all respects.

Simon André Forsberg

3:27 PM

None of my guesses where on the right continent...

Malachi

@rolfl that is what I meant, I knew they were coming

Simon André Forsberg

url.geoguessr.com/7wh0 for anyone who wants to challenge me

rolfl

@SimonAndréForsberg - that one was tough....

Simon André Forsberg

@rolfl At least you got some contintents right!

rolfl

url.geoguessr.com/7whc

The URL works now.....

Jeroen Vannevel

3:36 PM

0

Q: Getting the System.Type from an assembly loaded at runtime

As a followup to this question I have now come to the problem of being able to get the Type of a type that is defined by the user in his own solution. Using the standard mscorlib types, everything works. The question is very easy: how can I get this type from an assembly that I will only know at...

c# .net reflection .net-assembly roslyn

skiwi

LOL I couldn't get that site to work, it said Click anywhere to start playing, I was clicking on Click anywhere to start playing the whole time, but that didn't work. I had to click outside the Click anywhere to start playing.

"Your guess was 11806.354 km from the correct location and gave 271 points." This is nothing abnormal?

Simon André Forsberg

@skiwi I did the same thing.

skiwi

So close...

Could almost read it

url.geoguessr.com/7whn

Jeroen Vannevel

I could use a hand

rolfl

Left or right?

Stack Exchange

3:42 PM

0

Q: Yet another 'any'

This is a follow-up of 'any' class implementation. After posting my answer, I kept working on the code towards parametrizing with respect to memory management as I had promised. I ended up in some pretty non-trivial piece of code that I decided to post here as a new question for review. Basicall...