Add Crystal::PointerLinkedList#first?#16400
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straight-shoota merged 1 commit intocrystal-lang:masterfrom Nov 24, 2025
Merged
Add Crystal::PointerLinkedList#first?#16400straight-shoota merged 1 commit intocrystal-lang:masterfrom
Crystal::PointerLinkedList#first?#16400straight-shoota merged 1 commit intocrystal-lang:masterfrom
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straight-shoota
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Nov 21, 2025
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This is needed to import
Sync::ConditionVariablefrom the sync shard: we need to access the first waiter. We could access.@headbut a properly tested method is nicer.NOTE: the nilable methods of
Crystal::PointerLinkedListsuch as#first?,#pop?and#shift?should return a mere NULL pointer instead of a nilablePointer(T) | Nilunion.