At 11:29 AM +0530 9/3/10, Jatin Davey wrote:
>Any reason to use named variables than to use the default variable ($_) ?
Two reasons that I know:
1. If you use a named variable, you and everybody else reading your
code will know what it is for. While it doesn't matter much for
3-line loops, short programs tend to turn into longer ones, and then
you really should be using named variables.
2. The default variable $_ can get clobbered by some operations. If
you use $_, you have to be careful to avoid such operations. It is
much better not to have to worry.
Quiz for extra credit: Uri's program has a misleadingly-named
variable. Can you figure out what it is?
--
Jim Gibson
Jim@Gibson.org
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