SPUG: Where is grep's return value?

[Asim Jalis]

On Tue, Sep 10, 2002 at 05:10:16PM -0700, William Julien wrote:
> > On Tue, Sep 10, 2002 at 04:27:08PM -0700, Jeremy Mates wrote:
> > > * Orr, Chuck  (NOC) <chuck.orr at attws.com> [2002-09-10T16:08-0700]:
> > > > if (grep("$KEY",EXISTING)){
> > > 
> > > perl -le '@a=qw(a b c); if (@r = grep { $_ eq "b" } @a) { print "@r" }'
> > 
> > The "if" and "@r" temporary variable can be removed:
> > 
> > perl -le '@a=qw(a b c); print grep { $_ eq "b" } @a'
> 
> Or even better...
> 
> -->perl -le '@a=qw(vi is my shepherd I shall not font it); print join " ", grep /i/, @a;'
> vi is it

Good point. In fact, the output is correct on several levels. 

I prefer => for comma in join. With => you can almost see the " "
being inserted between the elements:

-->perl -le '@a=qw(vi is my shepherd I shall not font it); print join " " => grep /i/, @a;'
vi is it

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