Re: Defining Subroutines


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Re: Defining Subroutines

by Zaxo (Archbishop)

on Oct 24, 2002 at 03:02 UTC ( #207613=note: print w/replies, xml )

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in reply to Defining Subroutines

You got it backwards. Define a function with sub. You can call it with &max, but it's better to call using parentheses until you're comfortable with what the ampersand does. It causes prototypes to be ignored, and it arranges for the function to be called with the existing @_ as arguments.

After Compline,
Zaxo

Comment on Re: Defining Subroutines

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Re: Re: Defining Subroutines by rir (Vicar) on Oct 24, 2002 at 04:11 UTC
Not quite, using the ampersand causes the routine call to use the existing `@_` as the default arguments. If you provide arguments they are used instead. `sub z { my $i =1; foreach (@_) { print "$i : $_\n"; $i++; } } sub x { &z; # 1 &z( "good", "bye"); &z; # same as one again &z(); # called with empty list } x( "say", "hello");` [download]	[reply] [d/l] [select]
Re^2 Defining Subroutines by @rocks (Scribe) on Oct 24, 2002 at 04:40 UTC
Ok Zaxo, Thank you very much for the information. I got it now, thank you. -@rocks	[reply]

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