./devel/p5-constant-defer, constant subs with deferred value calculation

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Branch: pkgsrc-2022Q2, Version: 6, Package name: p5-constant-defer-6, Maintainer: pkgsrc-users

constant::defer creates a subroutine which on the first call runs given
code to calculate its value, and on any subsequent calls just returns that
value, like a constant. The value code is discarded once run, allowing it
to be garbage collected.

Deferring a calculation is good if it might take a lot of work or produce
a big result but is only needed sometimes or only well into a program run.
If it's never needed then the value code never runs.

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Filesize: 42.409 KB

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