good chemistry is complicated, and a little bit messy -LW |
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https://metacpan.org/pod/HOP::Stream#promise says
promise A utility function with a code prototype (sub promise(&);) allowing one to specify a coderef with curly braces and omit the sub keyword. For debugging you might try https://metacpan.org/pod/HOP::Stream#show In reply to Re: How to understand chapter 6 of Higher Order Perl? (promise/show)
by Anonymous Monk
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