I was thinking back to my freshman year at college (five years ago) when I took an exam to place-out of intro-level computer science. There was a question about loop invariants, and I was wondering if loop invariants are really necessary in this case or if the question was simply a bad example... the question was to write an iterative de...
Sorry if the title is not enough to understand what i am asking about. I am rails developer and i used multiple lines of <% %> in my views but now i realized that it's not best practice so i came here and like to you all excellent guys what is the correct way in ROR? For example if i required to something like following <% user =User....
How does Java handle integer underflows and overflows? Leading on from that, how would you check/test that this is occurring? ...
Hi, let's say I have code in C with approximately this structure: switch (something) { case 0: return "blah"; break; case 1: case 4: return "foo"; break; case 2: case 3: return "bar"; break; default: return "foobar"; break; } Now obviously, the "break"s are not necessary for the code to run correctly, but it sort of...
Many standard C and POSIX functions return -1 for error, and 0 on success, for example truncate, fflush, msync, etc. int ret = truncate("/some/file", 42); Is it better practice to check for success with ret != -1 or ret == 0, and why? My Thoughts It's my experience most people check for the error case (ret != -1), as there is typica...
#include<stdio.h> int main(void) { static int i=i++, j=j++, k=k++; printf("i = %d j = %d k = %d", i, j, k); return 0; } Output in Turbo C 4.5 : i = 0 j = 0 k = 0 In gcc I'm getting the error: Initializer element is not constant Which one is logically correct ? I'm in bit confusion.. ...