Today I was bitten by a stupid mistake: 

push @ary, "foo" unless grep { "foo" } @ary;

What I meant was of course: 

push @ary, "foo" unless grep { $_ eq "foo" } @ary;

Would it be reasonable for me to expect perl, in the first case, to emit a warning. Say something like "Probably useless use of a constant in grep block"?

In reply to "Useless use of a constant" in grep block? by perlancar

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