Re: sending data thru a sub routine

Just a minor extension of choroba's observations (and mentioning, not just BTW, that the quoting here is for the windows box which was readily at hand):

C:\>perl -E "sub doit {for my $passed(@_) { say 'passed is: '. $passed
+;}}my @input=@ARGV; for my $input (@input) {say $input;} doit(@input)
+;" "one" "two" "three"
one
two
three
passed is: one
passed is: two
passed is: three

C:\>
[download]

Alternately, you could use shift inside the loop in the sub. And, nota bene, that if your CLI arguements are enclosed in a single set of (appropriate) quotes, @ARGV will have them all as a single element, in which case, you need to (for one example) split @ARGV and push its arguments into whatever array you're going to use to pass to the sub.

C:\>perl -E "sub doit {for my $passed(@_) { say 'passed is: '. $passed
+;}} my @input = @ARGV; for my $input (@input) {say $input;} doit(@inp
+ut);" "one two three"  # NOTE QUOTING VARIANCE!
one two three
passed is: one two three

C:\>
[download]

Quis custodiet ipsos custodes. Juvenal, Satires
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Re^2: sending data thru a sub routine by AnomalousMonk (Archbishop) on May 11, 2014 at 17:28 UTC
... all as a single element, in which case, you need to (for one example) `split` @ARGV and `push` its arguments ... This seems needlessly confusing advice to offer a novice Perler. Literally calling split on `@ARGV` e.g.: `my @array = split @ARGV;` is likely to produce (unpleasantly) surprising results. Can you be more clear?	[reply] [d/l] [select]
Re^3: sending data thru a sub routine by ww (Archbishop) on May 12, 2014 at 00:16 UTC
Good point: clarification herewith: Some processing is required; it's definitely not a matter of simply splitting @ARGV, because split expects to work on a string, not an array. `C:\>perl -E "my ($input) = @ARGV; my @input = split / /, $input; for $ +_(@input) {say $_;}" "trez zwei uno" trez zwei uno` [download] parenthesize the `$input` to stringify the content of `@ARGV` rather than count its (single here) element(s). Quibble: AnomalousMonk could improve on this 'clarification' and probably would have done it better the first time. Come, let us reason together: Spirit of the Monastery Quis custodiet ipsos custodes. Juvenal, Satires	[reply] [d/l] [select]
Re^2: sending data thru a sub routine by james28909 (Deacon) on May 12, 2014 at 01:47 UTC
i will def keep this in mind, could come in handy :P	[reply]