in reply to Re^3: Why Perl Docs examples do not use strict and warnings often
in thread Why Perl Docs examples do not use strict and warnings often
We had many trolls recently, but IMHO this question regarding perldsc is legit.
For example:
Count how many times my is missing here
Declaration of an ARRAY OF ARRAYS @AoA = ( [ "fred", "barney" ], [ "george", "jane", "elroy" ], [ "homer", "marge", "bart" ], ); Generation of an ARRAY OF ARRAYS # reading from file while ( <> ) { push @AoA, [ split ]; } # calling a function for $i ( 1 .. 10 ) { $AoA[$i] = [ somefunc($i) ]; } # using temp vars for $i ( 1 .. 10 ) { @tmp = somefunc($i); $AoA[$i] = [ @tmp ]; } # add to an existing row push $AoA[0]->@*, "wilma", "betty"; Access and Printing of an ARRAY OF ARRAYS # one element $AoA[0][0] = "Fred"; # another element $AoA[1][1] =~ s/(\w)/\u$1/; # print the whole thing with refs for $aref ( @AoA ) { print "\t [ @$aref ],\n"; } # print the whole thing with indices for $i ( 0 .. $#AoA ) { print "\t [ $AoA[$i]->@* ],\n"; } # print the whole thing one at a time for $i ( 0 .. $#AoA ) { for $j ( 0 .. $AoA[$i]->$#* ) { print "elem at ($i, $j) is $AoA[$i][$j]\n"; } }
> > > Many of the examples also run fine in the absence of strict and warnings.
And they still would with my declarations for all Perl 5 versions, even without 'use strict'.
But they would fail for versions not supporting ->@* and ->#* , which makes the backwards compatibility argument even more dubious.
Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery
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