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Ruby's "yield" and "blocks" are not coroutines

by LanX (Canon)
on Apr 23, 2013 at 14:51 UTC ( #1030165=note: print w/ replies, xml ) Need Help??


in reply to Re: RFC: Simulating Ruby's "yield" and "blocks" in Perl
in thread RFC: Simulating Ruby's "yield" and "blocks" in Perl

Sorry I'm tired of repeating it, but even if Rubyistas claim it, yield / blocks are not coroutines, they are syntactic sugar for callbacks.

And I think Matz is to blame for choosing the misleading term "yield" in this context.

(Like Larry is to blame for some misleading "List" <-> "Array" terminology)

And BTW Perl5 has coroutines, passing parameters is just ugly to implement and I'm not sure about the performance gain.

Go take a look at the goto &sub syntax.

Cheers Rolf

( addicted to the Perl Programming Language)


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