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Re: Re: Avoiding user-input in sub calls.

by liz (Monsignor)
on Nov 02, 2003 at 05:30 UTC ( [id://303900]=note: print w/replies, xml ) Need Help??

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in reply to Re: Avoiding user-input in sub calls.
in thread Avoiding user-input in sub calls.

Since when dealing with code refs, there is no difference between not existing and undefined, I always prefer to write: 
if ( exists $func{$sub} )
{
   $func{$sub}->($data)
}
else
{
   $func{one}->($data)
}

[download]
as: 
($func{$sub} || $func{one})->( $data );

[download]

which at least ensures that the same parameters are passed to (and possibly returned from ) the default routine. More compact and fewer things to worry about from a maintenance point of view!

Liz

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