On Wed, 22 May 2002 13:04:53 -0600, Scott Wiersdorf wrote:
>What is the shortest way to test a variable for truth and then set its
>value to false such that the truth test still succeeds?
>
>For example, I have a global variable $a (given) that is somehow set
>to true. I want to test it for truth and do something:
>
> <snip>
> $a = 1;
>
> ...
>
> if( $a ) {
> $a = 0;
> do_something();
> }
Shortest? Huh... I don't care, personally. But I sometimes do this,
which has not too much redundancy (it only mentions $a once, for
example):
$a &&= do { do_something(); 0 };
$a will become 0 afterwards, the do BLOCK is only executed if $a was
true. That was what you asked for, isn't it?
--
Bart.
