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Easy way to get line numbers of caller? 4 44 (10/31/2011 6:19:30 PM) comp.unix.shell I have a slight impulse -- slight, mind you -- to add line number reporting to something. Thing is, I want to call shell functions. So even if I assume a shell which has line numbers: error() { echo $BASH_L... Seebs

What is undefined? 1 64 (8/14/2011 10:37:49 PM) comp.lang.ruby Poking around, I ran into an interesting thing; nil.object_id == 0x4, but there's another magical object_id, 0x6, which shows up in the Ruby source as "Qundef". .... But what does it *do*? How have I managed ... Seebs

multi-dimensional arrays, idioms... 6 47 (7/13/2011 6:50:01 PM) comp.lang.c So, for a really long time, I've done this: int **allocate_multidim_array(int n, int m) { int **a; int i; a = malloc(n * sizeof(int *)); for (i = 0; i < n; ++i) { a[i] = malloc(m * sizeof(int)); ... Seebs

[semi-OT] a hunk of not-very-portable code I've been working on 10 50 (3/17/2010 12:49:53 AM) comp.lang.c The code here is mostly off-topic, but I bring it up because a few people have expressed interest, and while a great deal of the code is non-portable, there's also a fairly large amount of basically generic C i... Seebs

Making FILE opaque 15 71 (2/12/2010 7:30:12 PM) comp.lang.c It was recently pointed out that the theoretical construct: struct __file; typedef struct __file FILE; is not a conforming implementation (assuming no definition of struct __file), because FILE is specified t... Seebs

Efficency and the standard library 640 188 (2/10/2010 7:25:54 PM) comp.lang.c This may have gotten buried given that it started in a Nilges thread, but it's actually pretty interesting. There was some discussion of algorithms to perform the task: Inputs: target string, replacement str... Seebs

Manipulating big hunks of data 5 47 (1/17/2010 10:54:11 PM) comp.lang.ruby Is there any kind of container-like-thing in Ruby for the special case of a large number of fixed-type-datums? (As opposed to objects.) Basically, imagine that I have, for instance, a huge matrix of data. So ... Seebs

Newbie question: Defining a numeric type 31 48 (11/15/2009 11:52:24 PM) comp.lang.ruby I have a type which has a bit of internal magic, but fundamentally, I want it to behave for most purposes like the value it yields from to_i/to_int. Basically, is there a way to avoid having to write +, -, etc... Seebs

mysterious memory corruption, very confused 10 46 (6/29/2008 9:20:58 AM) comp.lang.ruby ruby 1.8.7-p22, OS X 10.4.mumble, PostgreSQL 8.3.1, ruby-pg 2008-03-18. I get random data corruption when trying to execute queries. The data corruption comes and goes VERY unpredictably. I've narrowed it do... Seebs

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Pointers #20 28 15 (3/13/2013 1:57:16 AM) comp.lang.c Hi, I have started programming in C recently and started learning about poi= nters. Insofar, all the material has been easy to digest and understand. Bu= t pointers are really giving me a hard time! I've read... j.wagner1024 (6)

The Highest-Level Feature of C 26 26 (3/19/2013 9:00:00 PM) comp.lang.c The Highest-Level Feature of C is? Think about your answer before visiting: http://prog21.dadgum.com/166.html Shocked me. Lynn ... lmc (186)

difference between pointers 46 42 (3/30/2013 3:36:42 PM) comp.lang.c hello all, I get this doubt about this behavior of C. consider the following code. int a,b,d1,d2,diff; d1= &a; d2 = &b; diff = &a-&b; printf("\nDifference between address: %d", diff); diff = d1-... tewari.varun (18)

Cleanly exiting from a 'sourced' script... (bash) 9 19 (4/16/2013 7:46:30 PM) comp.unix.shell I know this is in the category of "If you need to do that, then you shouldn't be sourcing it", but I'm asking anyway... I'm sure someone, somewhere, has come up with a clever way to do this. We all know t... gazelle3 (1598)

Who can explain this bug? 58 34 (4/17/2013 7:49:50 PM) comp.lang.c Platform: gcc 4.6.3 on AMD Athlon(tm) II X2 245 Processor on Ubuntu 12.04 The bug I thought was due to a particularly hard to find memory access problem (see other thread I started today) seems to be even... dmathog (163)

Optimizing pow() function 50 6 (4/22/2013 3:23:51 PM) comp.lang.c I have a simple (16-bit) embedded platform and I have to make the following calculations. unsigned int func(unsigned int adc, unsigned int pwr, unsigned int pt, double exp) { return (unsigned int)(pow((d... pozzugno (151)

I need your advices about C prg. 80 13 (4/24/2013 7:30:01 PM) comp.lang.c Hi there! Firstly, sorry for my bad English :/ I'm only 17 and I want to learn C and write perfect codes in C. I'm not so good in C programming, but I want to become a good C programmer. My English i... dg282828 (7)

Initialiazing a malloced struct to all-0 23 10 (4/25/2013 3:10:55 PM) comp.lang.c Hello everyone, Typically when I want to initialize an auto struct to "all-0" values, I write struct foo bar = { 0 }; and let the compiler correctly set arithmetic values to the appropriate 0 or 0.... Noob

Question regarding access to struct members 4 1 (5/18/2013 8:07:06 PM) comp.lang.c Consider the following code: struct Foo { int a; int b; }; struct Bar { int a; int b; float c; }; void test(void) { struct Foo *foo; struct Bar bar; foo... rui.maciel (1746)

reference type for C 143 5 (5/16/2013 2:08:43 PM) comp.lang.c I like the reference type that has been introduced with C++ I wondered why isn't that feature retrofitted in C. Is there something hindering it? thx - roar - ... roland.arthaud (12)