LinuxQuestions.org - Blog Entries

Bash Scripting for Dummies and Geniuses

Posted 11-20-2013 at 09:18 AM by rtmistler
Updated 05-25-2020 at 08:43 AM by rtmistler

Tags bash, command line, programming, scripting

One only need look at LinuxQuestions.org to notice the great amount of script (and code) questions and varieties of comments to realize that we all have varying opinions about bash programming.

Many questions are very complicated, as are the resulting answers and script recommendations. I've noticed that two fundamental points are invariably overlooked by the questioners, and many of the comments:

Quote:

"All programming is the use of simple operations to solve complex

...

rtmistler

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Views 5554 Comments 8 rtmistler is offline

C++ had lambda functions!

Posted 01-31-2013 at 01:21 AM by hydraMax (Bits and Pixels)

Tags c++, programming

I'm doing a CS class which forces me to use C++. I was not very excited about this. However, I have recently be greatly encouraged by the discovery that C++ does, in fact, have lambda functions (or, more properly, anonymous functions) at least in the C++11 standard:

https://en.wikipedia.org/wiki/Anonym...ctions#C.2B.2B

Basically, the big deal here is that I can construct new functions /inside/ of other functions, and even capture variables from the context. This,...

hydraMax

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Views 1384 Comments 0 hydraMax is offline

Too cool: Haskell Source Analysis

Posted 09-21-2012 at 08:46 PM by hydraMax (Bits and Pixels)
Updated 09-21-2012 at 08:54 PM by hydraMax

Tags gaming, haskell, programming

I tried out Haskell's SourceGraph program on the project I'm currently working on. It produces tons of cool dependency / analysis graphs. I saved a summary graph in SVG format at the following location:

https://frigidcode.com/ftprepo/edge/...aph-0.1.15.svg

Warning: It is only 374K in size, but it is over 22,000 pixels wide at the default size!

The project in its present form uses an event-based model with an oop-like component structure....

hydraMax

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Views 1538 Comments 0 hydraMax is offline

gtsh: how to use Google Translate without touching a web browser

Posted 08-09-2011 at 05:49 PM by MrCode
Updated 08-09-2011 at 05:49 PM by MrCode ("Transhlate"? WTF? :p)

Tags google, linux, programming

I present "gtsh" (Google Translate for the SHell), a tiny(!) shell script that acts as a frontend to Google Translate:

Code:

#!/bin/bash
if test -z $3; then
	echo "Usage: $0 \"<str>\" <lang1> <lang2>"
	echo "Translates string \"<str>\" from <lang1> to <lang2>"
	echo "(CLI frontend to Google Translate)"
else
	wget -qO- "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=$1&langpair=$2|${3:-$3}"

...

MrCode

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Posted in Tech/Linux-related Stuff

Views 13258 Comments 1 MrCode is offline

A little "fractal" I discovered…

Posted 07-20-2011 at 02:45 PM by MrCode
Updated 07-25-2011 at 03:56 AM by MrCode (tinypic dumped one of my images; replaced :D)

Tags programming, sdl

…while I was still learning the Windows API.

I was experimenting with (very slow) procedural image generation with SetPixel(), when I did something like this for each pixel in the image:

Code:

SetPixel(x,y,RGB((x ^ y) * (cr.right - cr.left) * 0.025,
                 (x ^ y) * (cr.right - cr.left) * 0.025,
                 (x & y) * (cr.right - cr.left) * 0.025));

…or something like that (I don't remember all the arguments...

MrCode

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