B::Deparse is your friend in questions of precedence. 

$ perl -MO=Deparse,-p -e '$f = grep /f/, @array ? 1 : 2;'
($f = grep(/f/, (@array ? 1 : 2)));

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In reply to Re: Precedence of grep vs. ?: by Fletch
in thread Precedence of grep vs. ?: by blackjudas

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