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Answer: How can I write a function's output to a scalar?

by ackohno (Scribe)
on Jul 13, 2002 at 03:13 UTC ( #181441=categorized answer: print w/replies, xml ) Need Help??

Q&A > subroutines > How can I write a function's output to a scalar? - Answer contributed by ackohno

The question is a bit vague, I assume you mean to do something like this:
#!/usr/bin/perl -w use strict; my ($num1,$num2); $num1=2; $num2=sum($num1,$num1); print "$num2\n"; # Sum: returns the sum of all arguments. sub sum { my $ret; $ret=0; for(@_){$ret+=$_} return $ret; }
return tells perl what the subroutine should give back when called, so $num2 is given the final value of $ret in the subroutine sum.

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[LanX]: before digging into deep debugging ... I have a strange UTF8 problem, probably it rings a bell:
[LanX]: two utf8 strings from different sources are base64 encoded, but after joining both the umlauts in teh second get deleted
[Corion]: LanX: You can't just join two base64 strings together
[LanX]: (not a high priority bug because I can use some HTML entities in the second string)
[Corion]: base64 is padded to a multiple of 4 chars (or something)
[LanX]: misunderstanding, I joined them before converting to base64
[Corion]: Also, I would be wary of encodings and try to make really sure that both input strings are UTF-8. Maybe join the input strings from one source together to see whether they decode as bad or not
[Corion]: LanX: Then the problem should persist without encoding to base64 too ;)

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