split - Perl - Subroutine argument is another subroutine call -


i have subroutine called greptext, greps text variable. trying split output. possible pass output of greptext argument split directly? without putting value of greptext in variable first ? greptext returns string.

what trying is:

$output = (split ":", greptext("findthis", $alltext))[1];

greptext follows

sub greptext(){ @text = split "\n", $_[1]; $output = grep /$_[0]/, @text; return $output; }

it doesn't work. error 

too many arguments main::greptext @ line 115, near "$alltext)"

it very possible pass input of subroutine perl function directly without using perl variable.

i think issue might "greptext" subroutine. debug issue in detail, more information required.

i did try routine , able required output:

#!/usr/bin/perl sub greptext {  return "hello:world"; # returns test string }  $output = (split ":", greptext($texttofind, $alltext))[1]; print "$output";

output:

world

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