The first example isn't an option because the sub in question is in a module (threads::async()). Also it defeats the most common use case of an in-line bareblock.

The latter doesn't help as I only have (multiple) coderefs at the place of use. I could use async{ $coderef->( ... ) };, but I'm not keen on the doubling of the call overhead.

I just rediscovered async \&{ $codeRef };. I'm not sure if that's equally costly.

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In reply to Re^2: The & prototype and code references in scalars. by BrowserUk
in thread The & prototype and code references in scalars. by BrowserUk

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