Much simpler would be
sub recReverse
{
my $ref2array = shift;
@$ref2array = reverse @$ref2array;
for (@$ref2array) { recReverse $_ if ref $_ eq 'ARRAY' }
}
---- edit ----
The last code was written without any perl available. On closer look i need to do the check for an array ref before trying to reverse. A working rewrite is:
sub recReverse
{
my $ref2array = shift;
return unless ref $ref2array eq 'ARRAY';
@$ref2array = reverse @$ref2array;
recReverse($_) for @$ref2array
}
Now I have a question. If I write recReverse $_ for @$ref2array instead of the parenthesised form of the last line, I would have thought that this was equivalent. But I get an error message:
Can't call method "recReverse" without a package or object reference
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