Add any_component_removed condition
#8326
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james7132
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Apr 7, 2023
| // Simply checking `is_empty` would not be enough. | ||
| // PERF: note that `count` is efficient (not actually looping/iterating), | ||
| // due to Bevy having a specialized implementation for events. | ||
| move |mut removals: RemovedComponents<T>| !removals.iter().count() != 0 |
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| move |mut removals: RemovedComponents<T>| !removals.iter().count() != 0 | |
| move |mut removals: RemovedComponents<T>| removals.iter().next().is_none() |
This otherwise potentially does a full traversal.
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This contradicts the perf note above.
I would still prefer to remove the perf note and just use is_empty though.
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Oh I completely forgot we overrode the default implementations for those. Agreed on the use of is_empty instead.
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is_empty can't be used. The reason is mentioned in the comment: it won't advance the reader and the condition will be triggered twice. We use the same strategy for events:
james7132
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james7132
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Apr 18, 2023
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mockersf
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Co-authored-by: François <mockersf@gmail.com>
alice-i-cecile
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This was referenced Jun 28, 2023
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Added helper extracted from #7711. that PR contains some controversy conditions, but this one should be good to go.
Changelog
Added
any_component_removedcondition.