Entries tagged with programming

Entry tags:

programming,
work

Implicit casts.

What does this program print?

#include <stdio.h>

int main()
{
  int a = -10;
  unsigned int b = 2;

  printf("%d\n", a/b);

  return 0;
}

Counter-intuitive, huh?

Entry tags:

programming

Kadane's Algorithm.

Can someone please explain to me, why Kadane's Algorithm returns the correct results? How do you prove it works for all sets of numbers?

Entry tags:

programming

Bash trouble.

> typeset -ra bad_arr=('' A)
> good_arr=('' A)
> echo ${bad_arr[0]}
A
> echo ${bad_arr[1]}

> echo ${good_arr[0]}

> echo ${good_arr[1]}
A

What's happening here??

Current Mood: silly

Entry tags:

The world community of PHP coders is baffled.

> php -r "define('MY_CONST'); unset(MY_CONST');"
PHP Parse error:  syntax error, unexpected ''', expecting T_PAAMAYIM_NEKUDOTAYIM in Command line code on line 1

Greek? Indonesian? Malay?

Current Mood: embarrassed

Entry tags:

programming

PHP bug - postmortem.

What's wrong with this statement?

if (defined(SOME_CONSTANT)) ...

( answer )

Current Mood: confused

Entry tags:

programming

עפעס מוזר

Just discovered the following fact:

In JavaScript: if ("0") ... evaluates true, just like in C/C++.
In PHP: if ("0") ... evaluates false. Go figure.

Current Mood: impressed

Entry tags:

programming

Obfuscated.

How do people come up with this stuff?

main(t,_,a)
char *a;
{return!0<t?t<3?main(-79,-13,a+main(-87,1-_,
main(-86, 0, a+1 )+a)):1,t<_?main(t+1, _, a ):3,main ( -94, -27+t, a
)&&t == 2 ?_<13 ?main ( 2, _+1, "%s %d %d\n" ):9:16:t<0?t<-72?main(_,
t,"@n'+,#'/*{}w+/w#cdnr/+,{}r/*de}+,/*{*+,/w{%+,/w#q#n+,/#{l,+,/n{n+\
,/+#n+,/#;#q#n+,/+k#;*+,/'r :'d*'3,}{w+K w'K:'+}e#';dq#'l q#'+d'K#!/\
+k#;q#'r}eKK#}w'r}eKK{nl]'/#;#q#n'){)#}w'){){nl]'/+#n';d}rw' i;# ){n\
l]!/n{n#'; r{#w'r nc{nl]'/#{l,+'K {rw' iK{;[{nl]'/w#q#\
n'wk nw' iwk{KK{nl]!/w{%'l##w#' i; :{nl]'/*{q#'ld;r'}{nlwb!/*de}'c \
;;{nl'-{}rw]'/+,}##'*}#nc,',#nw]'/+kd'+e}+;\
#'rdq#w! nr'/ ') }+}{rl#'{n' ')# }'+}##(!!/")
:t<-50?_==*a ?putchar(a[31]):main(-65,_,a+1):main((*a == '/')+t,_,a\
+1 ):0<t?main ( 2, 2 , "%s"):*a=='/'||main(0,main(-61,*a, "!ek;dc \
i@bK'(q)-[w]*%n+r3#l,{}:\nuwloca-O;m .vpbks,fxntdCeghiry"),a+1);}