Hi, if I understand you correctly, the issue is that the diamond operator uses shift to iterate through @ARGV, so the second sub will find it empty. 

$ perl -Mstrict -Mwarnings -E 'say "starting: " . scalar @ARGV; while(
+<>){chomp; say "$_\nremaining: " . scalar @ARGV}' foo bar baz

[download]
starting: 3
foo
remaining: 2
bar
remaining: 1
baz
remaining: 0

[download]

Hope this helps!

Update: added demo


The way forward always starts with a minimal test.

In reply to Re: Benchmark diamond operator by 1nickt
in thread Benchmark diamond operator by thanos1983

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