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The Big Programming Thread - Page 623

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Thread Rules
1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution.
2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20)
3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible.
4. Use [code] tags to format code blocks.
meatpudding
Profile Joined March 2011
Australia520 Posts
April 26 2015 06:48 GMT
#12441
I'm starting a new graphics app, any suggestions on where to start?

I'm going for cross-platform compatibility, so it will be using OpenGL. I'm comfortable using native code, but a windowing library might be nice. I have been using SDL which hasn't quite lived up to my expectations.

Be excellent to each other.
fmod
Profile Blog Joined November 2013
Cayman Islands330 Posts
April 26 2015 13:14 GMT
#12442
On April 26 2015 15:48 meatpudding wrote:
I'm starting a new graphics app, any suggestions on where to start?

I'm going for cross-platform compatibility, so it will be using OpenGL. I'm comfortable using native code, but a windowing library might be nice. I have been using SDL which hasn't quite lived up to my expectations.


I recommend doing it yourself, if you don't want third party library which has tons of features you don't need. Here are some links from the opengl wiki.
https://www.opengl.org/wiki/Creating_an_OpenGL_Context_(WGL)
https://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX). Note these tutorials are for 3.0 which isn't the latest version but it should be very obvious how to make them work for higher gl versions. For the extensions I personally use this: https://bitbucket.org/alfonse/glloadgen/wiki/Home. Just tell it which opengl version you want and it generates the required header and implementation.
I don't particularly like you.
iaretehnoob
Profile Joined June 2004
Sweden741 Posts
April 26 2015 14:03 GMT
#12443
GLFW is good for (cross-platform) window handling and at least basic input and timing.

Get a library for texture loading. Maybe stb_image.
sabas123
Profile Blog Joined December 2010
Netherlands3122 Posts
April 27 2015 16:40 GMT
#12444
Hey guys.

I currently have 2 intership offers and I don't know what to choose.

Company A: a small company of about 3 programmers and 2 front end developers. Having reasonable ok clients like Royal Dutch Shell and universities.
Company B: an huge company. If I choose them I most likely be working on renewing their code base from COBAL to C#, Luckly the chances are low I will ever work with COBAL. Also I have to choose to work in with only a handful devolopers on a side project of theirs.

The people at company A are people where I can mesh with very well, have similair intrestest and have similair preferences.
At company B so far if have seen most people are relatively old and experainced.

I wont be getting any money at company B, currently talking to company A.

Any tips on what I should pick?
The harder it becomes, the more you should focus on the basics.
Manit0u
Profile Blog Joined August 2004
Poland17243 Posts
Last Edited: 2015-04-27 17:21:10
April 27 2015 17:19 GMT
#12445
On April 28 2015 01:40 sabas123 wrote:
Hey guys.

I currently have 2 intership offers and I don't know what to choose.

Company A: a small company of about 3 programmers and 2 front end developers. Having reasonable ok clients like Royal Dutch Shell and universities.
Company B: an huge company. If I choose them I most likely be working on renewing their code base from COBAL to C#, Luckly the chances are low I will ever work with COBAL. Also I have to choose to work in with only a handful devolopers on a side project of theirs.

The people at company A are people where I can mesh with very well, have similair intrestest and have similair preferences.
At company B so far if have seen most people are relatively old and experainced.

I wont be getting any money at company B, currently talking to company A.

Any tips on what I should pick?


So far I've had better work relations and learned more working for smaller companies. Big companies usually care a lot less about their interns (especially those that work on some small side projects that are of little immediate value to the company). It can also be really painful if some of the employees are spread across different cities/countries/continents, makes communication a lot harder (and sometimes leads to misunderstandings which turn into huge frustrations).

In any way, it's always better to choose a workplace where you'll be doing something you like. If, for example, company A develops all/most of its software in Ruby and you like that, and company B wants you to work in COBOL and you don't like it then there's no point in even trying to get into company B. That's how I see it, the decision is up to you.
Time is precious. Waste it wisely.
Acrofales
Profile Joined August 2010
Spain17971 Posts
April 27 2015 17:43 GMT
#12446
The way you talk about them it sounds like you already know where you want to go.
Ben...
Profile Joined January 2011
Canada3485 Posts
April 27 2015 18:18 GMT
#12447
On April 26 2015 23:03 iaretehnoob wrote:
GLFW is good for (cross-platform) window handling and at least basic input and timing.

Get a library for texture loading. Maybe stb_image.

Yeah GLFW is the way to go. It's fairly simple to use and it works great.

And yes, get something separate for texture loading and handling. Doing that yourself is a huge pain to deal with.
"Cliiiiiiiiiiiiiiiiide" -Tastosis
meatpudding
Profile Joined March 2011
Australia520 Posts
April 28 2015 00:07 GMT
#12448
Ok, looks like GLFW has the most support. I'll take a look and see how it goes.
Be excellent to each other.
phar
Profile Joined August 2011
United States1080 Posts
April 28 2015 02:19 GMT
#12449
On April 28 2015 01:40 sabas123 wrote:
Hey guys.

I currently have 2 intership offers and I don't know what to choose.

Company A: a small company of about 3 programmers and 2 front end developers. Having reasonable ok clients like Royal Dutch Shell and universities.
Company B: an huge company. If I choose them I most likely be working on renewing their code base from COBAL to C#, Luckly the chances are low I will ever work with COBAL. Also I have to choose to work in with only a handful devolopers on a side project of theirs.

The people at company A are people where I can mesh with very well, have similair intrestest and have similair preferences.
At company B so far if have seen most people are relatively old and experainced.

I wont be getting any money at company B, currently talking to company A.

Any tips on what I should pick?

How common are unpaid tech internships in the Netherlands?
Who after all is today speaking about the destruction of the Armenians?
helpman169
Profile Joined April 2015
28 Posts
Last Edited: 2015-04-28 08:34:13
April 28 2015 08:19 GMT
#12450
Why do most graph algorithms work with adjacency matrices instead of incident matrices?
teamamerica
Profile Blog Joined July 2010
United States958 Posts
April 28 2015 10:16 GMT
#12451
On April 28 2015 17:19 helpman169 wrote:
Why do most graph algorithms work with adjacency matrices instead of incident matrices?


Smells like HW but I'll bite since I'm curious.

Most work on adjacency matrices? I've seen most based on adjacency lists. But then again I don't actually ever use these graph algorithms, this is just what I remember from class.

Most of these graph algorithms are basically iterating through all the nodes reachable from one node in some form (they all have some concept of a frontier of nodes to examine that I know).

While lists are bad b/c you're following pointers over memory I guess, I'd also guess the memory efficiency on sparser graphs + having all the data you need stored already is worth it relative to adjacency matrix (although I don't know much about efficient storing spare matrix, I'm sure there's a lot of work on that field).

For an incident matrix you can't even perform a simple operation like adjacent(v1, v2) in constant time since you need to check all the edges v1 and v2 are incident upon. To get the list of nodes from a single node then you go from O(V) (for an adjacent matrix, this is already stored for you in list) to O(VE) since finding for a single node was O(E). And these are the most common operations in graph algorithms, so why slow them down?

My question would be, why would you prefer an incident matrix? I'm asking because this isn't something I work with so idk.
RIP GOMTV. RIP PROLEAGUE.
helpman169
Profile Joined April 2015
28 Posts
April 28 2015 12:24 GMT
#12452
I'm actually not very versed in computer science, I was just going through the MIT linear algebra course and there the lecturer was going through graphs and incident matrices and how this leads to some fundamental insights for applied maths.
Then I realized that most computer algorithms use adjacent represenation and wondered why this might be, but your explanation makes sense, thanks!
FFGenerations
Profile Blog Joined April 2011
7088 Posts
April 28 2015 23:19 GMT
#12453
well i just submitted my Perfect Verification Studio shit attempt + shit report

if you're interested in what it is check out http://www.eschertech.com/tutorial/tutorials.php

its a programming language/software for designing (constructing) code and verifying it against specifications that you also have to construct

ive literally never seen something so difficult to understand. i got to the end of the Basic tutorial understanding nothing and then suddenly they stop giving full code samples and i'm just laughing in disbelief

i've never felt that something is so plain out of my capabilities as this. i just hope he gives me 40/100 so i dont have to do it again, its just flat out beyond me
Cool BW Music Vid - youtube.com/watch?v=W54nlqJ-Nx8 ~~~~~ ᕤ OYSTERS ᕤ CLAMS ᕤ AND ᕤ CUCKOLDS ᕤ ~~~~~~ ༼ ᕤ◕◡◕ ༽ᕤ PUNCH HIM ༼ ᕤ◕◡◕ ༽ᕤ
Nesserev
Profile Blog Joined January 2011
Belgium2760 Posts
Last Edited: 2015-04-29 00:06:57
April 28 2015 23:56 GMT
#12454
--- Nuked ---
Blitzkrieg0
Profile Blog Joined August 2010
United States13132 Posts
April 29 2015 00:02 GMT
#12455
Read the page where it shits all over Java and was pretty amused.
I'll always be your shadow and veil your eyes from states of ain soph aur.
Blitzkrieg0
Profile Blog Joined August 2010
United States13132 Posts
April 29 2015 00:50 GMT
#12456
On April 29 2015 08:56 Nesserev wrote:
Hmmm, that looks interesting, but I always thought that mathematically proven code/certified code was limited to the realm of functional programming. I only glossed over the tutorial, is this the same thing?

Show nested quote +
On April 29 2015 09:02 Blitzkrieg0 wrote:
Read the page where it shits all over Java and was pretty amused.

Where do they shit on Java? Do you mean the page 'A Java Example' in the tutorial?


http://www.eschertech.com/tutorial/tutorial1/perfect_oo_differences.php

All their examples are why java is a terrible language.
I'll always be your shadow and veil your eyes from states of ain soph aur.
teamamerica
Profile Blog Joined July 2010
United States958 Posts
Last Edited: 2015-04-29 02:17:05
April 29 2015 01:50 GMT
#12457
On April 29 2015 09:50 Blitzkrieg0 wrote:
Show nested quote +
On April 29 2015 08:56 Nesserev wrote:
Hmmm, that looks interesting, but I always thought that mathematically proven code/certified code was limited to the realm of functional programming. I only glossed over the tutorial, is this the same thing?

On April 29 2015 09:02 Blitzkrieg0 wrote:
Read the page where it shits all over Java and was pretty amused.

Where do they shit on Java? Do you mean the page 'A Java Example' in the tutorial?


http://www.eschertech.com/tutorial/tutorial1/perfect_oo_differences.php

All their examples are why java is a terrible language.


What about Java are they calling out? I don't get why people complain about == String comparison in Java. It's very simple.
1) Are both Strings declared in code or result from interned()? == works
2) Else no, use .equals.

Java isn't only one to use pass by reference and basically requiring overriding some sort of equals method to compare two custom objects.

No destructors? Well you signed up for GC so you wouldn't have to worry about destructors.

What defines a terrible language? I am really curious why you dislike Java so much. Google/all web scale companies , financial trading firms/your TV/atm/phone/microwave all get good use out of it.

- Hmmm, that looks interesting, but I always thought that mathematically proven code/certified code was limited to the realm of functional programming. I only glossed over the tutorial, is this the same thing?

Glancing over tutorial it seems to be coding with contracts which are a useful thing to have but don't constitute being formally verified itself.

A lot of formally verified code is in stuff like C/Ada/C++ (Paris train system, L4 microkernel, fly by wire systems are written in these languages).

Now there's some newer stuff written in ML languages (Coq in OCaml comes to mind) that is used to help verify.

Not that I know a lot about all this stuff, this is again half remembered class + 5 minutes googling.

edit:
was helping friend with Swift, realized I don't really understand garbage collection on final (or effectively final in Java 8 life) references in Java. Say I have like.

public class Test {

public static void test(String s) { //s now effectively final since we don't change
((Runnable) () -> System.out.println(s)).run(); //when is s collected!
}

}
.
So I was reading final variables are converted to implicit instance variables? Else when is the s that's passed into my lambada eligble for GC? When lambada terminates?
RIP GOMTV. RIP PROLEAGUE.
Blitzkrieg0
Profile Blog Joined August 2010
United States13132 Posts
Last Edited: 2015-04-29 02:22:39
April 29 2015 02:21 GMT
#12458
On April 29 2015 10:50 teamamerica wrote:
Show nested quote +
On April 29 2015 09:50 Blitzkrieg0 wrote:
On April 29 2015 08:56 Nesserev wrote:
Hmmm, that looks interesting, but I always thought that mathematically proven code/certified code was limited to the realm of functional programming. I only glossed over the tutorial, is this the same thing?

On April 29 2015 09:02 Blitzkrieg0 wrote:
Read the page where it shits all over Java and was pretty amused.

Where do they shit on Java? Do you mean the page 'A Java Example' in the tutorial?


http://www.eschertech.com/tutorial/tutorial1/perfect_oo_differences.php

All their examples are why java is a terrible language.

What defines a terrible language? I am really curious why you dislike Java so much. Google/all web scale companies , financial trading firms/your TV/atm/phone/microwave all get good use out of it.


Terrible language is vague, but when your description says Java does this and Perfect does not this then the creator clearly didn't like the conventions of Java and think it is a terrible language. I said I found this amusing, not that I disliked java.
I'll always be your shadow and veil your eyes from states of ain soph aur.
dae
Profile Joined June 2010
Canada1600 Posts
April 29 2015 05:34 GMT
#12459
On April 28 2015 01:40 sabas123 wrote:
Hey guys.

I currently have 2 intership offers and I don't know what to choose.

Company A: a small company of about 3 programmers and 2 front end developers. Having reasonable ok clients like Royal Dutch Shell and universities.
Company B: an huge company. If I choose them I most likely be working on renewing their code base from COBAL to C#, Luckly the chances are low I will ever work with COBAL. Also I have to choose to work in with only a handful devolopers on a side project of theirs.

The people at company A are people where I can mesh with very well, have similair intrestest and have similair preferences.
At company B so far if have seen most people are relatively old and experainced.

I wont be getting any money at company B, currently talking to company A.

Any tips on what I should pick?


Company A. For an internship, the better you like the people you work with, the more time you end up spending/chatting with them and the more you end up learning as a result.

It also will make you much happier, and make you enjoy your time there much more.
ZenithM
Profile Joined February 2011
France15952 Posts
Last Edited: 2015-04-29 16:28:06
April 29 2015 16:26 GMT
#12460
On April 29 2015 11:21 Blitzkrieg0 wrote:
Show nested quote +
On April 29 2015 10:50 teamamerica wrote:
On April 29 2015 09:50 Blitzkrieg0 wrote:
On April 29 2015 08:56 Nesserev wrote:
Hmmm, that looks interesting, but I always thought that mathematically proven code/certified code was limited to the realm of functional programming. I only glossed over the tutorial, is this the same thing?

On April 29 2015 09:02 Blitzkrieg0 wrote:
Read the page where it shits all over Java and was pretty amused.

Where do they shit on Java? Do you mean the page 'A Java Example' in the tutorial?


http://www.eschertech.com/tutorial/tutorial1/perfect_oo_differences.php

All their examples are why java is a terrible language.

What defines a terrible language? I am really curious why you dislike Java so much. Google/all web scale companies , financial trading firms/your TV/atm/phone/microwave all get good use out of it.


Terrible language is vague, but when your description says Java does this and Perfect does not this then the creator clearly didn't like the conventions of Java and think it is a terrible language. I said I found this amusing, not that I disliked java.

You would have the right to dislike it though, it truly is terrible. Having coded for years in Java, I could argue for days about why it's terrible, and I also know why it's still so much used despite of that.


On another topic, I'm watching Build 2015 right now and they announced Visual Studio Code, a lightweight code editor which works on Windows, Mac and Linux for 12 languages with intellisense, debugging and all the goodies. Good shit :D
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