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In a recent post I noticed on_success => => sub { and thought, "huh, that's gotta hurt". To my surprise the extra => didn't have the effect I expected. I did a little experimenting:

use strict; use warnings; showParams(fat => => 'comma'); showParams('real', , 'comma'); showParams('explicit', undef, 'comma'); sub showParams { my @params = @_; for my $param (@params) { if (!defined $param) { print ">undef<\n"; next; } if (ref $param) { print "'", ref $param, "'\n"; next; } print "'$param'\n"; } printf "\n"; }

Prints:

'fat' 'comma' 'real' 'comma' 'explicit' >undef< 'comma'

I expected to see the >undef< line for each version of the call to showParams. What am I missing?

perl -v reports: This is perl 5, version 32, subversion 1 (v5.32.1) built for MSWin32-x64-multi-thread.

Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond

In reply to Doubley surprised by fat commas by GrandFather

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