wantarray, I thought, and your test would confirms it, depends on context, not scope.
But then, your do as block, with the code directly inside, like this:
my @arr2=do {wantarray
? print("wantarray!\n")
: defined wantarray
? print("wantarray defined but false\n")
: print("wantarray undefined!\n");
wantarray
? qw( ciao a tutti )
: defined wantarray && "howdy!";
};
Is always undefined, both in scalar, void or array context, and the same apply to wantarray called directly, like this:
my $sc2=wantarray
? print("wantarray!\n") && qw(ciao a tutti)
: defined wantarray
? print("wantarray defined but false\n") && "howdy!"
: print("wantarray undefined!\n");
The way I got it working as expected were in a sub, like this:
sub wanttest {
wantarray
? print("wantarray!\n")
: defined wantarray
? print("wantarray defined but false\n")
: print("wantarray undefined!\n");
return wantarray
? qw( ciao a tutti )
: defined wantarray && "howdy!";
}
wanttest();
my $sc=wanttest();
print "Returned $sc\n\n";
my @arr=wanttest();
print "Returned @arr \n\n";
Is wantarray only trustable inside subs or even there it fails to return as expected anytime?
I was expecting thet the context made the trick, but after see it fail when called directly, I wasn't expecting that the do block didn't work as the do EXPR (do 'filename.pl').
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