I have finally ran into a unit test that test for behavior that Lua has but Crystal doesn't.
Lua has the concept of weak tables that allow the garbage collector to remove member from a table automatically. Crystal, however, has no such feature.
You can make a type like Hash(T, WeakRef(U)) in Crystal. And this hash-map will not persist the value referenced by WeakRef(U). However, unlike crystal, when a WeakRef(U) is empty, it is not removed from data structures.
Capital /
npub1ry…wur9z
2023-07-01 21:39:34
Author Public Key
npub1ryfja06pvw3rnyv3hjgvy0en68lyj3wta8yq0vx3j6ch9gnsr9ss2wur9zPublished at
2023-07-01 21:39:34Event JSON
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"content": "I have finally ran into a unit test that test for behavior that Lua has but Crystal doesn't. \n\nLua has the concept of weak tables that allow the garbage collector to remove member from a table automatically. Crystal, however, has no such feature. \n\nYou can make a type like Hash(T, WeakRef(U)) in Crystal. And this hash-map will not persist the value referenced by WeakRef(U). However, unlike crystal, when a WeakRef(U) is empty, it is not removed from data structures.",
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