The 2nd Monitor

Captain Obvious

21:00

0

The mall management is trying to figure out what was the busiest moment in the mall in the last year. Each data entry includes a timestamp (seconds in Unix Epoch format), an amount of people and whether they entered or exited. Example: { time: 1440084737, count: 4, ActionType: "E...

java

Mast

@Phrancis That's because you didn't create it yet.

Add self.score = 0 to your __init__.

Modify score += 1 to self.score += 1.

#ThereIFixedIt

Phrancis

Hmm ok thanks guys I'll try that

user2296177

Anybody got any C++ questions?

No?

Well okay.

Mast

@user2296177 There must be 200 c++ zombies out there. Go find one.

Dan Pantry

I have a C++ question, why is it so damn convoluted

:^)

Mast

21:08

@DanPantry Do you want to turn this into a C++ vs JavaScript?

user2296177

What's convoluted about C++?

Dan Pantry

the war of all wars.

I was joking

Mast

^^

Dan Pantry

though if C++ had rust's borrow checker and modules, it would be the perfect language

basically, C++ would be a better language if it was Rust. and not C++.

user2296177

What's a borrow checker?

Dan Pantry

21:09

the borrow checker is the mechanism in rust's compiler that prevents you do use-after-free, happens-before that sort of thing

Mast

@user2296177 See docs.

Dan Pantry

basically the borrowck is the thing that checks at comipile time for concurrency errors, the docs will explain it better than I can.

Mast

@DanPantry C++ will throw a compiler error in your face.

Dan Pantry

For use after free, yeah

But not for all things

Mast

Unless it happens at runtime.

Phrancis

21:10

lol warnings

Mast

In that case you got exceptions.

Dan Pantry

@Phrancis warnings should be treated as errors in C++ anyway

that's why you always compile with -Wall

Mast

@Phrancis Sorry, it should throw an error, not a warning.

IIRC anyway.

Dan Pantry

It'd probably do it for very basic ones

Mast

Oh well, as Dan said, treat them as errors to prevent complications.

user2296177

21:11

@DanPantry I compile with that and pedantic errors too.

Dan Pantry

but in larger programs I don't think C++ has the semantic depth to notice it

user2296177

In case -Wall doesn't already have them

Mast

@user2296177 s/pendatic/pedantic

2

Dan Pantry

though then again, C++ has const so I guess it has the things that Rust does

Just Rust is immutable by default instead of mutable by default

user2296177

@Mast lol

Dan Pantry

21:12

brb

Phrancis

@Mast TS

user2296177

@Mast Thanks

Jamal

@CaptainObvious Since I already answered the question, perhaps someone else can address the answer invalidation.

Mast

@Jamal Fixed.

Jamal

By the way, is it even normal to return a traditional array in Java?

Phrancis

21:19

Is it considered ok in Python to use classes only when it fits, e.g. for a type of object that's too complicated to represent by one of the normal types?

Mast

@Phrancis As long as everything is encapsulated in functions.

If something is too complicated, it definitely should have a class.

Complicated things go in classes to make them less complicated.

Perhaps you should tell us what exactly you're thinking about :-)

Phrancis

Board = NewType('Board', Dict[int, Cell]) # a simple type

user2296177

@Mast Abstraction solves so many problems...

Mast

@Phrancis You just created a new type AFAIU. You no longer need a class.

Dan Pantry

is NewType like a record?

Mast

21:25

However, I would hesitate making it a type.

Why don't you make it a class and give that class functions?

Like any proper OO?

You could even do both, now I think about it.

Give the class a field which is a new type.

Vogel612

@Jamal well it depends on the use case.

Mast

@Phrancis What do the recent PEPs say about it?

Vogel612

For collections that don't change size it's quite appropriate

also oil processing is really annoying

Phrancis

@Mast Haven't really checked, kind of winging it :)

I like your approach/idea I might try that

@DanPantry NewType is essentially an alias for whatever thing you define it as

At least, AFAIU it

Dan Pantry

@Jamal I can't speak for java but i'd say probably not... the user either wants Collection for mutable stuff or Iterable for readable, but non-modifiable, stuff

Mast

21:34

484 is about Type hints, which may be relevant (including 482 and 483 by the way). 435 is about Enum by the way.

Phrancis

I've had 484 and 435 open

Mast

:-)

Phrancis

I didn't know those were referred as the PEPs

Mast

Usually you refer to specific ones, but I guess this works.

Dan Pantry

@Phrancis sounds like you need... a PEPtalk

7

Phrancis

21:40

badum-tsh

user2296177

@DanPantry Killing it with the bad jokes

Dan Pantry

I mean my name is very close to Dan Puntry. you should expect this.

7

user2296177

dude

Dan Pantry

:D

Mast

Don't get us started about the fish jokes.

Dan Pantry

21:43

i have no regrets

Meh, he wasn't around for that so he won't get it

Or she, apologies

Mast

Now I'm tempted to get started about the fish jokes anyway.

You have a bad influence on me @DanP

Phrancis

Please don't, fish puns stink =D

user2296177

a whole new level of bad has been unlocked

Hosch250

@Mast Please do.

arda

3

Hosch250

21:45

I love puns.

user2296177

@arda haha

Mast

Feb 7 '14 at 22:58, by Jamal

A fish, a monkey, a mug, a robot, and a rabbit walk into a bar...

Hosch250

Don't feel orcaword about it...

user2296177

This chat is almost as entertaining as C++.

rolfl

almost?\

user2296177

21:46

oh crap

Mast

This chat is way more entertaining than C++.

rolfl

I mean.... C++ can hardly be considered entertaining ;-)

Hosch250

This is @Phrancis's opinion:

Jamal

HI MONKEY

Hosch250

> We should dolphinitely scale back on the fish puns

Mast

21:47

And behold, our sage monkey arrived. Master of Puns.

Hosch250

@rolfl Give us some puns, please.

Jamal

But we already graduated. :-P

rolfl

Yeah.... the caviar of puns.

Mast

So he won't bother the team with them. Time to bother us with them instead.

rolfl

Monking Jamal... long time..... probably too long.

Hosch250

21:49

After all, we are only unofishal punsters. You've been recognized for it.

> Never trust unlicensed puns, always check they're ofishal

Mast

@user2296177 From here on downwards.

rolfl

Returning []array things in Java makes a lot of sense and is normal, when it makes sense ;-) ... often though, programmers don't have that much sense, so they return List<...> instead... when [] would have been better.....

Vogel612

then again often when they return [] they actually should've returned Collection or Set

user2296177

@Mast I saw the puns

rolfl

My pet peeve is things that return List<Integer> ......

user2296177

21:52

Why's that?

Unboxing?

Jamal

@rolfl Oh, I also need to send you my updated resume (new skills and employment change).

Vogel612

@user2296177 try removing a certain element from that list

Jamal

I was curious about [] since it doesn't work in C++ and assumed it was the same way in Java.

Vogel612

that's only the start. usually they're just slow as heck though

@Jamal why would it not?

Captain Obvious

0

Q: Filter sheet by multiple columns

It didn't take long and the last filter for a single column at a time isn't enough anymore. I needed a more advanced filter that can filter by multiple columns. I've wrote another function that now looks like this. This time I use an additional column A where I put true/false as a result of the ...

javascript beginner google-apps-script google-sheets

Vogel612

21:55

[] in Java is basically ** in C++

user2296177

@Vogel612 Do you mean just *?

Vogel612

no because Arrays are references

user2296177

Arrays will decay to pointers, not to pointers of pointers

arrays are more like pointers than references.

Vogel612

correct, but returning an array returns a pointer to an array behind the scenes

Mast

@user2296177 A pointer to a pointer is **.

So Vogel is right.

user2296177

21:56

Huh? I know that a pointer to a pointer is **.

Vogel612

but you can't really compare the semantics either way..

well java Arrays are Objects.

maybe that makes it cleaner

so you have an Object and within that Object there's a raw array

for C++ purposes the closest match is either a class with an array in it (which as you mention correctly decays to a pointer)

or just a pointer pointer

which makes 3d arrays even more confusing

aside from that the array elements often are objects, just to make your day worse

user2296177

@Vogel612 I see what you meant now, for some reason I thought you meant arrays in C++ were **

Been a long day.

Captain Obvious

0

Q: Record data structure in Java

Person.java public class Person { // private to prevent being accessible by // stating "person.name", "person.age", "person.friend" // and instead making setters and getters private String name; private int age; private boolean friend; public Person(String startNam...

java data-structures

Dan Pantry

@CaptainObvious I don't know what is going on here.

JAVA i guess

Vogel612

@CaptainObvious WAT?

Dan Pantry

22:09

I'm glad they explained what private meant in a comment above the use of private.

Though, I thought that was our job

user2296177

@Vogel612 There are array references though.

Without any pointers involved.

Well, in the sense that it's a reference and not a pointer.

Dan Pantry

@CaptainObvious Interesting how the person has a friend attribute.

Mast

> // TODO Auto-generated method stub

Dan Pantry

a friend to who? according to that object model, presumably everyone.

Hosch250

A boolean friend?

Mast

22:14

So, do you still have to do it or is it auto generated?

Hosch250

Who's that?

Mast

A Bolian.

~~close enough~~

Hosch250

Reminds me of the chief orc in LotR.

Dan Pantry

@Mast his head looks like an easter egg container

but painted blue

Mast

Yea, they all have those ridges over their head.

Hosch250

22:16

Talking of easter eggs...

I like easter eggs in software.

Mast

The out-of-universe explanation must be something like 'cutting the mask in half makes it easier to put it on'.

Hosch250

They typically aren't implemented anymore, though.

Dan Pantry

like do a barrel roll in google :D

Hosch250

Or play pacman on the streets of your home town.

Oh.

But that wasn't a real barrel roll.

Mast

The squid in Assassins Creed II.

That's a fairly recent one.

Just Cause 3 has a couple, according to rumour.

skiwi

22:21

Wow, I solved a problem with jQuery, instead of creating more problems!

4

Mast

The Abstergo logos in FC3.

Plenty of easter-eggs.

Hosch250

I heard that Windows Remote Desktop has one that was never discovered.

Mast

Ask Google Now "When am I".

Hosch250

Don't have an Android.

Dan Pantry

@skiwi lol

your problem is now that you're using jquery

Mast

22:25

Dr. Who Easter Egg on Android Google Now [SPOILER]

►

Hosch250

I asked Bing that: deathclock.com

Dan Pantry

@Mast I would be morei mpressed if he didn't have to say 'question mark'.

Mast

@DanPantry Cortana automatically assumes a question mark.

arda

@Mast it doesn't

Mast

@arda Mine does.

arda

22:26

Cortana, from what I remember, it may or may not put a question mark depending on your voice tone

Mast

It sends to you to deathclock.com

Not exactly what I had in mind.

Dan Pantry

@Mast Well, that's a blast from the past.

Hosch250

I like the sadistic mode.

3

Dan Pantry

/r/nocontext

Mast

> I am sorry, but your time has expired!
Have a nice day.

And it isn't even Friday.

Dan Pantry

22:31

Me when learning a new language

6

Phrancis

Man this is fun... repl.it/D3Ao

Mast

Current board:
1_ 2_ 3_
4_ 5_ 6_
7_ 8_ 9_

1_ 2_ 3O
4_ 5X 6_
7_ 8_ 9_

1_ 2_ 3_
4_ 5_ 6_
7_ 8_ 9_

Eh.

Phrancis

The display is not superb, but I suppose that's kind of moot for a console app?

Jamal

@DanPantry Kinda like when I was learning SQL not too long ago. Yet, with no exams, I made a 100% in that class.

Mast

@Phrancis Either you display something or you don't display something.

Don't half ass it. Whole ass it instead.

Phrancis

22:35

I'm open for UX suggestions... I think my display is practical (or will be, once there is user input asking which cell they want to play next...)

Mast

Turn it into a User Experience question.

Phrancis

But, yeah it's ugly

Mast

@Phrancis Perhaps that will make it better. Currently it's just confusing :-)

Phrancis

I might get more into ASCII art after the thing actually works... since the display is just a method of the board, it'll be easy to change

Hosch250

I'm trying to decide whether to improve my computer-bombardment algorithm, or to make a WPF UI next.

I think I'll do the algorithm.

Phrancis

22:37

When given the option to make a UI, or something else, always choose something else.

2

Mast

@Phrancis And you aren't even a hard core C++ programmer.

> Most of the hard core C++ programmers I know hate user interface programming. This surprises me, because I find UI programming to be quintessentially easy, straightforward, and fun.

(source)

Phrancis

@Mast um ever heard of Java GUIs? ;D

Granted, I agree GUIs are pretty easy, it's just repetitive and largely tiresome, almost like busywork

Mast

True.

Hosch250

WPF GUI's are anything but tiresome.

They are usually easy to make, but they can be a horrid pain to figure out how to do certain complicated things (just like anything else).

I guess I need to create an array of known points of a (potentially) uncompleted ship and use that for future moves.

If there are no points in the array, do a random move.

Otherwise, use the points to figure out what direction the ship is (or might be) facing and continue the attack.

Captain Obvious

23:02

0

Q: EntityFramework UnitTest Opinion

Hello i am quite new in testing :) So plz dont slate me :D I just want to ask what can be done to make this could smaller in nice and easy way. Any ideas and help will be nice :) Tests works i just need opinions :) Tests using System; using Vegan.Test.TestClass; using System.Collect...

c# unit-testing

Dan Pantry

> So plz dont slate me :D

> using Vegan

:x

Duga

This may fit better on codereview.stackexchange.com — Robert 28 secs ago

Jeroen Vannevel

ingredient.VegeOrVegetarian = VeganType.Both;

twitch

Dan Pantry

I feel like that question is shaming me for not being either vegan or vegetarian

Jeroen Vannevel

Assert.Fail("Property: {0} Error: {1}", validationError.PropertyName, validationError.ErrorMessage);

That's not doing what you think it's doing, buddy

Dan Pantry

23:13

Yeah, does C# have Assert.Throws?

Jeroen Vannevel

Well, the testing libraries do

Zak

@Mast I recognised that without even having to see the source ^^

Captain Obvious

23:43

0

Q: A simple fully connected ANN module

I've written a simple module that creates a fully connected neural network of any size. The arguments of the train function are list of tuples with a training example array first and an array containing its class second, list that contains a number of neurons in every layer including the input an...

python performance ai machine-learning neural-network

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