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Implement any() and all() for all collections
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Authored by dereckson on Jul 2 2023, 18:07.
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Details

Summary

The any() and all() methods allow to determine if elements of the collection
pass a boolean test:

  • any($fn) will return true if at least one element satisfies $fn
  • all($fn) will return true if all elements of the collection satisfy $fn

Those was considered as functions for inclusion in PHP language, but rejected.

The $fn callback parameter must be a callable with one or two arguments,
fn ($value) or fn ($key, $value) and return a boolean.

Any other values than true will be falsy. That allows to cope with legacy
PHP functions returning true when the operation succeeds and an error code
if not, like Memcached::deleteMulti().

The execution of the callbacks stop when the result is definitive and can't
be affected by further values:

  • for any($fn), execution stops after the first callback returning true
  • for all($fn), execution stops after the first callback returning false

References:

Test Plan

Unit tests provided.

Actual use in the new keruald/cache library

Diff Detail

Repository
rKERUALD Keruald libraries development repository
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