Speaking of hideous, the functional approach written in Perl: 

if (my $x = x(f(), \&g)) {
   ...
}

[download]
having defined x() as 
sub x {
   my ($x, $g) = @_;
   $x && $g->($x)
}

[download]

In reply to Re^2: scope of my $x in if statements by ikegami
in thread scope of my $x in if statements by perl5ever

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