@chillworld As long as he's asking for how to fix the error, I won't vote to re-open. If his code would look the same, but without implying in the question that there's an error in it, then I'd vote to re-open.
I think some of the SO users when they direct users over here is fully aware of what we do here, but they expect the poster to ask for how to clean up their code rather than coming here with the exact same question
I have a site that displays 1 animated GIF, where the source is assigned by a variable: image_url[current_url]. When a user clicks next, this image is replaced by another source: image_url[current_url + 1]. To boost user experience, I also decided to preload the next 2 images: image_url[current_u...
And I assume using implicit typing does not play together well with complicated structures? Because Java uses the compiletime type (which you here hide with implicit typing), to infer the type of the expression of a complicated stream, if I'm correct
@amon type inference is more like how the generic type parameter is inferred from usage in db.MyEntities.Where<TEntity>(entity => entity.DateCreated ... - MSDN calls it "implicit typing".. msdn.microsoft.com/en-us/library/bb384061.aspx
but yeah it says the type is inferred, .. meh, a == b ;)
I'm trying to count the number of data comparisons in this quick sort algorithm, but am surely incrementing too often as my expected output is much lower than what I am currently getting. Here, i've incremented in partition's for loop and also every time recQuickSort is called. What am I missing?...
I have a list of elements, I need to find the first element that satisfy the condition then exit using Java 8 streams.
I think the following code unfortunately evaluate all available element which doesn't what i need, I need to evaluate items one by one and stop (break) when find the first match...
I like the response of a Java developer at Oracle to the question of how he knows it is a bug:
@Eran Well, I looked at the source code (SortedOps.java, lines 301-308) to see that it unconditionally pushes all the elements downstream after sorting them. This seems wrong since findFirst is supposed to be short-circuiting. Then I asked the guy who implemented it and he said "Yeah, it's a performance bug." :-) — Stuart Marks2 days ago
@Mat'sMug well, type inference is the CS term, and what it's called in the ML family (which is more or less where C# got the idea from). The term implicit typing could also be understood to mean dynamic typing. Interesting that MS is a bit sloppy with it's vocabulary.
@amon "implicit typing" is, in my experience, what a language like Python does. If an function needs an int, it attempts to interpret the argument as an int.
@Edward yes. That's normally referred to as “dynamic typing”, where values, not expressions or variables have types – that would be static typing. Duck typing is a specific kind of dynamic typing.
@SimonAndréForsberg Because today it's raining stars
"Questions containing broken code or asking for advice about code not yet written are off-topic, as the code is not ready for review. Such questions may be suitable for Stack Overflow or Programmers. After the question has been edited to contain working code, we will consider reopening it." <-- This may need an update to implicitely include code that is not working as intended? (From author's perspective that is not always the same as "broken code")
One thing that may confuse new people is that on SO, we like small, concise, redacted code containing only the bug. Here the code tends to be longer and complete but working. Is that described in a FAQ yet?
I can never decide if answers that are technically correct but absolutely terrible code quality should be downvoted on SO.... It's just bleh when someone--especially a high rep user--post a correct answer, but it's just so... ewww.
@Edward Worth noting, however, that C++ doesn't have the capabilities of full Hindley-Milner type inference. Not sure, but I doubt C# does either (but ML does, and Haskell not only has full H-M, but adds the ability to arbitrarily constrain types as well).
@Corbin I think it depends heavily on how the code quality is bad. For example, I frequently post answers there with names like "your_string" that have no place in real code, but (I think) help clarify the intent in context.
@Edward You do. That's why you define them in assembly language, and prefer an assembler that checks them too (and if necessary, I'm pretty sure I can find a quote of you saying so too... :-)
@Corbin I have no trouble at all with downvoting code that (for one example) says: "use new like this....". It may be technically correct, but the description of down-voting doesn't say "wrong", only "not helpful".
Every day, I get on my computer, I open up SO, and I think to myself, "maybe it will be better today!" Then I browse, and I browse, and I browse. And I come across countless terrible questions and countless terrible answers :/
@JerryCoffin That's a good point. I always think of downvoting a meaning wrong, not unhelpful.
I've also found that you have to meet the OP halfway (or more). If it's a C++ question and you start throwing complex templated functions with lambdas, etc. they simply might not know enough yet to make use of the answer.
Yeah, especially since operator>> isn't verified. I don't understand why no one checks that....
@Edward Oh definitely. The C++ community has this huge problem of "oh, well what you really need to do it fully template this and make it 40 times more complex!"
There's certain idioms and best practices that are simple and should be learned early on. The streams stuff falls under that in my opinion, but probably 85% of answers on SO handle them wrong.
Is there a more efficient approach to this code:
// save associated tag
let saveTag question =
if question.Tag = null then
()
else
let tagCount =
query{
for row in db.Tags_Tags_Tags do
...
@Corbin I think that part of the problem is that many university professors seem not to want to teach C++ in a way that resembles how real programmers actually use the language.
It's as though things were frozen in time in 1993 or so.
Of the 5 or so C++ using classes I've had in the past few years, I truly believe the professors didn't know any better (not that I blame them). It's one thing if students were picking up the bad habits on their own via googling and whatnot, but professors would give out handouts with terrible examples, and write terrible, terrible code on the board. And their "solutions" to things were always technically functional, but pretty meh in terms of quality.
I think the problem is just that academia typically means writing a program, getting the data you need and never returning ever again to that program. Couple that with the "I already know it well enough," mentality, and you end up with 95% of C++ programmers needing to unlearn 80% of what they've learned to be worthy of being let anywhere near a non-trivial code base.
This might be a fun Pipe Dream but I was thinking that with this
public override string ToString()
{
var parent = _xDoc.Element("queryxml");
if (parent == null) throw new InvalidOperationException("root node was not created.");
parent.Add(_queryNode);
return _xDoc.ToString();
}
...
@Edward I think a lot is that it doesn't fit the intent of the class. For better or worse, they treat the C++ class as the introduction to low-level programming (or something similar). To fit that, they prohibit using (nearly) the entire standard library, and anything else that departs from using C++ as a warped version of assembly language.
@Corbin If I were teaching C++, I'd use Stroustrup's book. Not only does it teach the language well, it also has explanations for why one should do or avoid certain things.
@Edward I've never actually had a class use a straight-up C++ book. It's always some kind of data structures/algorithm/etc book and we just used C++. Kind of odd. I guess foundations I might have though. Didn't take it.
> It's the tasteless, odorless, non-toxic, biodegradable, politically correct choice.
Hahaha. That shouldn't amuse me as much as it does. I think your post is right though. That's definitely the feel at my university. No one cares enough to fight for it, and Java "is used in the real world," so it *must* make sense!
@JerryCoffin At the local Uni (my alma mater) one of the required undergraduate courses for Computer Engineering is this course which starts from gates and logic and works up to C.
@Corbin I certainly found that one amusing to write. Unfortunately, I'm quite certain that if that question were posted on P.SE today, it would be closed before anybody could write an anwer.
@Edward Sounds like a decent course. Keep in mind: I've nothing at all against teaching low-level programming. What bothers me is conflating "C++" with "low level", and (usually) doing both poorly.
The other thing about academia is that it takes a sufficient mass of proficient people to actually create a course and to teach it. Doing new course prep is a lot more work than dusting off last semester's notes.
This sql code was given to me by a coworker on a project. All it does is takes a table that has one colomn and figures out the factorial of it and outputs a table with the running total of the vactorial along with the number of iterations.
To me it is really confusing and it uses a recursive WIT...
Hi, and welcome to Code Review. This answer is not really a code review. It does not explain why this code is more readable, and does not explain whyisPrime and generatePrimesBelow are not optimal. Can you elaborate? — rolfl ♦9 secs ago
Ho Ho Ho .... answering 2yr old questions ... hmmmm.
Meme: We could really use your ammo
Originator: syb0rg
Cultural Height: Side-effects of The Mission?
Background: Activity on CR has recently taken a hell of a spike. 40 votes/day isn't enough ammunition to shoot at all the good answers that are thrown at all incoming zombies. Increased activit...
^^ explicitly added out-of-ammo tag to this answer ;)
@Malachi just looked up pipe-dream... and yup, fanciful or impossible plan or hope, alluding to dreams produced by smoking an opium pipe sounds like it - good call on the delete, I didn't want to downvote (although that would have fixed my OCD)...
<?php
$nav_normal = array("1. Home","2. Read Me","3. License Agreement","4. General Information","5. Database Installer","6. Create an Account","7. Create Config","8. Successfully installed"
);
$last_normal = array_pop(array_keys($nav_normal));
foreach($nav_normal as $name){
if($Nav_I...
Is there a more efficient approach to this code:
// save associated tag
let saveTag question =
if question.Tag = null then
()
else
let tagCount =
query{
for row in db.Tags_Tags_Tags do
...
This might be a fun Pipe Dream but I was thinking that with this
public override string ToString()
{
var parent = _xDoc.Element("queryxml");
if (parent == null) throw new InvalidOperationException("root node was not created.");
parent.Add(_queryNode);
return _xDoc.ToString();
}
...
Meme: We could really use your ammo
Originator: syb0rg
Cultural Height: Side-effects of The Mission?
Background: Activity on CR has recently taken a hell of a spike. 40 votes/day isn't enough ammunition to shoot at all the good answers that are thrown at all incoming zombies. Increased activit...
