Using grep on undefined array

Eduardo Marques eduardo.marques at
Wed Aug 14 18:38:04 BST 2013

> Date: Wed, 14 Aug 2013 19:03:34 +0200
> From: abigail at
> To: at
> Subject: Re: Using grep on undefined array
> On Wed, Aug 14, 2013 at 12:35:19PM -0400, Avishalom Shalit wrote:
> > wait, aren't $a and $b special  ?
> > (they magically live for {$a<=>$b} etc. )
> They are only special in special cases. Outside of that, they are as
> friendly as your other variable.
> People who pipe up upon seeing some code that uses $a and $b for
> illustrative purposes, predicting hell and doom even if there's no sort
> in that code behave like mindless grasshoppers, incapable of thinking for
> themselves. They probably also argue one shouldn't take water with you
> in a desert, because more people drown in water than in any other liquid.
> Abigail

What about the strict pragma being perfectly fine with you using them without declaring?

Eduardo Marques

More information about the mailing list