Re: •Re: perl 1-liner to join a list?

Well, yes, actually I did. I thought that

push @a;

was equivalent to

push @a, $_;

in the same manner that

print;

is equivalent to

print $_;

Maybe I need to brush up on when $_ has to be used and when i can be omitted.

Is there a good ref material or camel chapter on this?

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Re: Re: •Re: perl 1-liner to join a list? by Nkuvu (Priest) on Nov 11, 2003 at 21:34 UTC
`perldoc -f push` doesn't say anything about defaulting to `$_`. Also, looking up `push` in the Camel doesn't show the `$_` box like it does for `print` (which is, conveniently, on the facing page in my Camel 3rd ed.) But I'm not criticizing, I might have made the same assumptions.	[reply] [d/l] [select]
Re: Re: •Re: perl 1-liner to join a list? by thens (Scribe) on Nov 12, 2003 at 12:46 UTC
This is how I try to remember this. `push` takes a list as argument and hence `$_` cannot be taken as a default argument for this. Update But then as Smylers pointed out `print` also takes a list of arguments but still takes `$_` as default argument when there is none. puzzling ?? -T use perl; use strict;	[reply] [d/l] [select]
Re: • perl 1-liner to join a list? by Smylers (Pilgrim) on Nov 12, 2003 at 16:04 UTC
This is how I try to remember this. push takes a list as argument and hence $_ cannot be taken as a default argument for this. But `print` takes a list of things too (and prints them, joined by `$,`) yet uses `$_` as the default, so that doesn't work as a distinguishing feature. Smylers	[reply] [d/l] [select]