For comparison; sub allows you to specify a coderef with curly braces. And sub allows you to omit the "promise" word.

What's the point of "promise" other than to make you type more letters?

In reply to Re^2: How to understand chapter 6 of Higher Order Perl? (promise/show) by Anonymous Monk
in thread How to understand chapter 6 of Higher Order Perl? by Anonymous Monk

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