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Re: Why the print is not working

by blue_cowdawg (Monsignor)
on Nov 10, 2005 at 16:41 UTC ( #507454=note: print w/replies, xml ) Need Help??


in reply to Why the print is not working

      Why the followig code is not working.

My son, let me give you some priestly advice: When you want to find out why something isn't working you first have to establish for the reader what your criteria for "working" is. In other words: what were you expecting to happen, and what really happened.

As has been noted before and I quote from the perldoc for reverse:

reverse LIST In list context, returns a list value consisting of the + ele- ments of LIST in the opposite order. In scalar context +, con- catenates the elements of LIST and returns a string val +ue with all characters in the opposite order. print reverse <>; # line tac, last line f +irst undef $/; # for efficiency of <> print scalar reverse <>; # character tac, last l +ine tsrif

So with that in mind, if I run the following on-liner:

perl -e 'print scalar reverse "dog" . "\n";'
I get the following terse output:
god

Let us play... If I run the following one liner:

perl -e 'print join( ",", reverse ( split "", "dog")) . "\n";'
I am now feeding reverse an array and I can now get the result
g,o,d

I hope this clears things up for you....


Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg

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