[Haskell-cafe] Re: New slogan for haskell.org

Stefan O'Rear stefanor at cox.net
Thu Nov 29 18:31:33 EST 2007

On Thu, Nov 29, 2007 at 09:48:22AM +0100, apfelmus wrote:
> Well, I only remember that it took _me_ a page of C code :D Basically due 
> to a hand-coded intset and user interaction (no REPL for C, after all).

In my C programming, I've taken to using gdb as a REPL:

stefan at stefans:/tmp$ vi foo.c
stefan at stefans:/tmp$ cat foo.c
int foo(int x) {
	return x * x;

int main(){}
stefan at stefans:/tmp$ gcc foo.c
stefan at stefans:/tmp$ gdb -q ./a.out
Using host libthread_db library
(gdb) b main
Breakpoint 1 at 0x804835e
(gdb) run
Starting program: /tmp/a.out 
Failed to read a valid object file image from memory.

Breakpoint 1, 0x0804835e in main ()
(gdb) p foo(2)
$1 = 4
(gdb) p foo(10)
$2 = 100
(gdb) p foo(-1)
$3 = 1
(gdb) p foo(0)
$4 = 0
(gdb) p foo(2)+foo(4)
$5 = 20
(gdb) quit
The program is running.  Exit anyway? (y or n) y
stefan at stefans:/tmp$

Makes most debugging tasks much easier.

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