WebApr 10, 2024 · Use of parentheses with a block argument in grep produces unexpected outcome. The first print of the following code does not print the expected result although the subroutine is passed as the block argument. It is expected to print 1 but print's 2. WebJan 7, 2014 · Return references to an array and a hash, and then dereference it. ($ref_array,$ref_hash) = $this->getData ('input'); @array = @ {$ref_array}; %hash = % {$ref_hash}; Pass in references (@array, %hash) to the function that will hold the output …

perl - Use of parentheses with a block argument in grep produces ...

WebThe Perl model for function call and return values is simple: all functions are passed as parameters one single flat list of scalars, and all functions likewise return to their caller one single flat list of scalars. WebJul 19, 2005 · You are returning a *reference* to a hash. Thus, you need to do this: my $newhash = MyFunction(); Then, you can access your hash like this: print $newhash … harley davidson in mississippi

Perl Hashes - GeeksforGeeks

Webkeys ARRAY Called in list context, returns a list consisting of all the keys of the named hash, or in Perl 5.12 or later only, the indices of an array. Perl releases prior to 5.12 will produce … WebOften you'll want to return more than one variable from a subroutine. You could do this by returning all the values in an array, or by accepting variable references as parameters and modifying those. In Perl however, you can return multiple variables easily. Getting one variable back: #!/usr/bin/perl use strict; use warnings; # Subroutine ... WebMay 7, 2024 · Practice Video return () function in Perl returns Value at the end of a subroutine, block, or do function. Returned value might be scalar, array, or a hash according to the selected context. Syntax: return Value Returns: a List in Scalar Context changzhou baolong motor co. ltd