helloed monks,

Often I need to distinguish between a loop that ran to completion, and one that was aborted due to a last statement. For example, if I want to check if every element in a list is less than 0.5, I might write

my @list = (rand(1), rand(1), rand(1));
my $less=1;
for (@list) { $less=0, last if $_>=0.5; }

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At the end of this, $less will be true if all the members of the list were small, and false otherwise. I understand that this could have been done via grep in clever ways, but this is just an example. If we are doing a loop, is there a cleaner way to distinguish running a loop to completion from aborting via a last. If not, it would be a nice feature to have a system variable (or some better way), where one could write 

for (@list) { last if $_ < 0.5; }
my $less = $loop_ran_to_completion;

[download]

After thinking about it some more, here is an ugly looking solution, but without any temporary variables:

use Data::Dump;
@list = (rand(1), rand(1), rand(1));
dd \@list;
OUT:
{    ANY:
    {
        for (@list)
        {    next ANY if $_ > 0.5;
        }
        # if all elements are small we come here
        print "All Small\n";
        next OUT
    }
    # if any element is big we come here
    print "Some Big\n";
}

[download]

In reply to Fall through loop by b4swine

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