http://qs1969.pair.com?node_id=544061

Seems to be a problem with references ...

The map operator receives all the elements of the array (x, y, z) and passes all of them correctly to the function f2:

#! /usr/perl -l sub f1 { my (\$f) = @_; my @z = ("\$f"); for my \$d (@z) {return \$d} } sub f2 { my (\$f) = @_; print "\n*\$f*\n" for my \$d ("\$f") {return \$d} } sub f3 { for my \$d (@_) {return \$d} } print map {f1(\$_)} qw(x y z); print map {f2(\$_)} qw(x y z); print map {f3(\$_)} qw(x y z);
Extrange, is like the function f2, only has been collecting the ref of the \$d variable, and when print is going to print the array, it prints the value of the same reference; that is the last 'z' (what's about the scopes!!! arrg)

I have solved the problem using a intermediate variable:

#! /usr/perl -l sub f1 { my (\$f) = @_; my @z = ("\$f"); for my \$d (@z) {return \$d} } sub f2 { my (\$f) = @_; for my \$d ("\$f") {my \$a=\$d; return \$a} } sub f3 { for my \$d (@_) {return \$d} } print map {f1(\$_)} qw(x y z); print map {f2(\$_)} qw(x y z); print map {f3(\$_)} qw(x y z);

cheers

perl -Te 'print map { chr((ord)-((10,20,2,7)[\$i++])) } split //,"turo"'