Sort of triggered by what CountZero and chromatic said, I tried this:
use strict;
use warnings;
use Data::Dumper;
use threads;
{
my @ReturnData = sub1();
print Dumper(@ReturnData);
}
{
my $ReturnData = sub1();
print Dumper($ReturnData);
}
{
my $thr = threads->new(\&sub1);
my @ReturnData = $thr->join;
print Dumper(@ReturnData);
}
{
my $thr = threads->new(\&sub1);
my $ReturnData = $thr->join;
print Dumper($ReturnData);
}
{
my ($thr) = threads->new(\&sub1);
my @ReturnData = $thr->join;
print Dumper(@ReturnData);
}
{
my ($thr) = threads->new(\&sub1);
my $ReturnData = $thr->join;
print Dumper($ReturnData);
}
sub sub1
{
return wantarray ? (1,2,3) : [4,5,6];
}
Results:
$VAR1 = 1;
$VAR2 = 2;
$VAR3 = 3;
$VAR1 = [
4,
5,
6
];
$VAR1 = [
4,
5,
6
];
$VAR1 = [
4,
5,
6
];
$VAR1 = 1;
$VAR2 = 2;
$VAR3 = 3;
$VAR1 = 3;
The result makes 100% sense under the current design, as it matches what the document said, the context (whether wantarray) has been already determined at the thread creation time.
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