The Big Programming Thread - Page 830

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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.

Ilikestarcraft

Korea (South)17734 Posts

January 25 2017 13:05 GMT

#16581

On January 25 2017 21:47 Manit0u wrote:
How can people work with white background in their IDE is beyond me...

I think that too but with black backgrounds

Acrofales

Spain18275 Posts

January 25 2017 13:11 GMT

#16582

On January 25 2017 21:47 Manit0u wrote:
How can people work with white background in their IDE is beyond me...

I much prefer white background. I find it's easier to read, and my eyes don't have a problem with getting tired.

Manit0u

Poland17731 Posts

January 25 2017 15:13 GMT

#16583

On January 25 2017 22:11 Acrofales wrote:

Show nested quote +

I much prefer white background. I find it's easier to read, and my eyes don't have a problem with getting tired.

Hmm... All the programmers who use NetBeans or Eclipse that I know of wear glasses. I don't need glasses (perfect vision in both eyes at age of 35 with long hours spent in front of computer since the early nineties), I was always wondering if it's the fact that I've always preferred dark backgrounds (with non-bright text on it).

Unrelated:


$('.timeline-control.next').addClass('disabled') unless somePointsAreVisible()

Man, CoffeeScript can be so nice... It makes me almost not hate JS

Blisse

Canada3710 Posts

January 26 2017 00:04 GMT

#16584

On January 26 2017 00:13 Manit0u wrote:

Show nested quote +

From what I know, there's no real consensus.

Your eyes generally finish their development by ages 25-30. Before then it's really random, probably genetic, as to which part of your eye starts degrading and how much.

What is agreed upon is that focusing your eyes is the problem. When something is far away, say 20ft, you generally don't have to focus your eyes. This is where the 20/20 vision comes from. When you bring that something closer, say your phone or your computer screen, you have to work to focus your eyes a bit more, especially the closer it is. This is a specific quality of looking at nearby objects, not specifically of computers. It happens if you read too much as well.

This is why I am skeptical of black versus white screen theory because unless you use OLED screens blacks are still lighted.

re:
https://www.scientificamerican.com/article/why-does-eyesight-deterio/
https://www.scientificamerican.com/article/earth-talk-tv-eyesight/

Deleted User 3420

24492 Posts

January 26 2017 02:06 GMT

#16585

im gonna need to learn a linux editor for my C class.

so here we go: vim or emacs?

Manit0u

Poland17731 Posts

January 26 2017 02:40 GMT

#16586

On January 26 2017 11:06 travis wrote:
im gonna need to learn a linux editor for my C class.

so here we go: vim or emacs?

Hahaha. The age old question

I used to be big on emacs back in the day but vim is just much better as the editor in the end. The input/commands switching seems really odd in the beginning, but after a while you begin to wonder why doesn't every editor have this feature. I really like the minimalistic approach to it and it's good to know because vi is bound to be installed on every single Linux box you'll come across so you can always have something familiar to work with.

If you want I can post my .vimrc file here. It has some very basic things set up to make life easier, nothing fancy (syntax highlighting, line number display, spaces instead of tabs etc.).

TheEmulator

28100 Posts

January 26 2017 03:31 GMT

#16587

I like Vim although you can't really go wrong with either. I'm not some die hard user that's going to go around saying Emacs sucks because it doesn't. Just do heavy research on what both offer and make a choice.

If you go with Vim just practice doing vimtutor every day for a couple of weeks and you will be really comfortable with the basics. Also I think vimtutor makes you install a starter .vimrc at the end which will give your vim some minor functionality.

Whichever you go with try to learn the basic commands and get comfortable with using the program first before you start venturing into the deep and dark hole of learning elisp/vimscript to customize the shit out of your editor

If you've got some time these two videos show off some cool stuff both editors can do.
+ Show Spoiler +

Nesserev

Belgium2760 Posts

January 26 2017 07:08 GMT

#16588

--- Nuked ---

Djagulingu

Germany3605 Posts

January 26 2017 07:55 GMT

#16589

On January 26 2017 16:08 Nesserev wrote:
What do I need to expect when a job post lists something like "IBM iSeries" or any mainframe computers?

Computer illiterate bosses.

-Zoda-

France3578 Posts

January 26 2017 10:40 GMT

#16590

On January 26 2017 11:06 travis wrote:
im gonna need to learn a linux editor for my C class.

so here we go: vim or emacs?

Coming back in this thread right on time...
My answer: both! Go Spacemacs! :D

Acrofales

Spain18275 Posts

January 26 2017 10:48 GMT

#16591

Nano. Fuck all your fancy editing options!

Silvanel

Poland4751 Posts

January 26 2017 11:58 GMT

#16592

So i have a C question. What exactly is difference between:

a = a + 1 and a = a++
+ Show Spoiler +

??
more specifically why:


#include <stdio.h>

int main () {
	int a = 10;
	do {
		printf("Value of a: %d\n", a);
		a = a + 1 ;
		
	} while ( a <20 );
	
	return 0;
}

and


#include <stdio.h>

int main () {
	int a = 10;
	do {
		printf("Value of a: %d\n", a);
		a = a++ ;
		
	} while ( a <20 );
	
	return 0;
}

give different results? (The latter creates an endless loop)

Edit:Nevermind got an answer myself, spoilered so evidence of my stupidity is not forgoten.

teamamerica

United States958 Posts

January 26 2017 12:26 GMT

#16593

On January 26 2017 00:13 Manit0u wrote:

Show nested quote +


$('.timeline-control.next').addClass('disabled') unless somePointsAreVisible()

Man, CoffeeScript can be so nice... It makes me almost not hate JS

I'm working in a codebase that's 10k+ lines of coffeescript. It's awful, and it's cause a lot of subtle bugs we're only noticing moving to another language (typescript, gradually). It has some nice things around iteration or comprehensions maybe, but it's weird rules around whitespace (more so then other languages, for example we have orders of magnitude more python) have caused us much headache. You can argue we all suck at coffeescript.

My 2cents on the matter. If I had to work in JS from greenfield I'd definitely lean toward either typescript or just ES6 by itself. Or maybe one of the new things e.g. flow, closurescript, scala.js. Really anything but coffeescript again.

Manit0u

Poland17731 Posts

January 26 2017 15:31 GMT

#16594

On January 26 2017 21:26 teamamerica wrote:

Show nested quote +

On January 26 2017 00:13 Manit0u wrote:

On January 25 2017 22:11 Acrofales wrote:

On January 25 2017 21:47 Manit0u wrote:
How can people work with white background in their IDE is beyond me...

I much prefer white background. I find it's easier to read, and my eyes don't have a problem with getting tired.


$('.timeline-control.next').addClass('disabled') unless somePointsAreVisible()

Man, CoffeeScript can be so nice... It makes me almost not hate JS

Well, if you have 10k+ lines of script it sure can get burdensome. I'm practically done with the app I've been making and I've only needed < 300 lines of CoffeeScript in total for it. It's really good for some small stuff.

Deleted User 3420

24492 Posts

January 27 2017 15:03 GMT

#16595

Is it ok if I come to this thread with questions related to my "discrete structures" course? It isn't programming, but it is computer science.

It goes over topics like

+ Show Spoiler +

(taken directly from it's website, he said that we really just go over whatever but this gives a good idea of what the course is about.

Combinatorics / Probability
Structural Induction
Mathematical Induction
Countability
Functions
Set Theory Fundamentals
Formal Proof Methodology
Number Theory Fundamentals
Predicate Logic
Combinational Circuits
Propositional Logic

and it looks like it's going to be pretty serious business.

I figure as long as it is cool to post questions about this stuff here, a lot of you will probably actually enjoy going over them.

also I decided to go with vim by the way.
it's funny because they kind of push emacs at us and then a student asks the professor what he uses and he's like "vim"

mantequilla

Turkey781 Posts

January 27 2017 15:23 GMT

#16596

Why do you need them (vim emacs) when nearly everything has a good IDE that's tailored specifically to whatever you do?

never used/installed them just asking.

Deleted User 3420

24492 Posts

January 27 2017 16:02 GMT

#16597

I suspect someone else has better answers, but it's my understanding that people may use them because:

1.) you may be working on a system where you don't have access to an IDE(in my case, I will sometimes need to develop over an SSH connection where I don't have access to an IDE).
2.) they have capabilities to navigate through text and files faster than with an ide (once you learn how to use them)

Deleted User 101379

4849 Posts

January 27 2017 17:02 GMT

#16598

On January 28 2017 01:02 travis wrote:
I suspect someone else has better answers, but it's my understanding that people may use them because:

1.) you may be working on a system where you don't have access to an IDE(in my case, I will sometimes need to develop over an SSH connection where I don't have access to an IDE).
2.) they have capabilities to navigate through text and files faster than with an ide (once you learn how to use them)

I used to do development purely in VIM for pretty much a decade, because all the IDEs I tried sucked.

Then eventually I got into C# and Visual Studio and I learned that a good IDE is actually worth it's (virtual) weight in gold. Good IDEs are just very rare. Many of the common ones, e.g. Eclipse, are flat out terrible. I've made excellent experience with the jetbrains IDEs, at least for Java and PHP. Those don't get in your way like too many other IDEs.

I still miss some VIM shortcuts, but I'm now faster with those IDEs than I've ever been with VIM - and I was pretty darn fast with VIM.

Silvanel

Poland4751 Posts

January 27 2017 17:52 GMT

#16599

Well the obvious answer is that a text editor can be used for many things besides developing. Many devices run Linux/QNX with basic text editors so if You are in need of editing some config file quickly its very handy.

I will give You an example:
I am working with embedded device that is running QNX. I need to change some paramteres inside config file on device. Now i can change conifguration of my ethernet card, remount the devices file system then copy the config file to shared folder edit it on my comp and copy edited file back. Takes about 2 minutes.
Or i can open this file in vi (which is part of QNX devices build) and edit it on device itself. Takes about 20 seconds.

I mean You dont need tu use Vi/Vim or whatever as Your IDE but knowing it just helps (sometimes).

Acrofales

Spain18275 Posts

January 27 2017 18:04 GMT

#16600

On January 28 2017 02:52 Silvanel wrote:
Well the obvious answer is that a text editor can be used for many things besides developing. Many devices run Linux/QNX with basic text editors so if You are in need of editing some config file quickly its very handy.

I will give You an example:
I am working with embedded device that is running QNX. I need to change some paramteres inside config file on device. Now i can change conifguration of my ethernet card, remount the devices file system then copy the config file to shared folder edit it on my comp and copy edited file back. Takes about 2 minutes.
Or i can open this file in vi (which is part of QNX devices build) and edit it on device itself. Takes about 20 seconds.

I mean You dont need tu use Vi/Vim or whatever as Your IDE but knowing it just helps (sometimes).

Or you can open it in nano/pico/whatever, and not have to know that you first have to hit "a" (or "i") to be able to type at all, then esc to get back to normal mode, and then :wq to save and quit. And one of those is equally or more likely to be installed on a bare linux system than vi (let alone vim or emacs).

vim/emacs is useful for editing code, because you actually have to switch files and do complicated edit operations. not because you have to edit some random file in your /etc directory.

I don't know anything about QNX, so I assume you actually need vi for that. But that seems overly specific for a university course

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