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Update function-table-clone.md

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Arseny Kapoulkine 2022-02-14 10:39:52 -08:00 • committed by GitHub
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@ -23,6 +23,8 @@ operation so from the ergonomics perspective it can be expected to be provided b
- has the same keys and values - has the same keys and values
- is not frozen, even if `t` was - is not frozen, even if `t` was
The copy is shallow: implementing a deep recursive copy automatically is challenging (for similar reasons why we decided to avoid this in `table.freeze`), and often only certain keys need to be cloned recursively which can be done after the initial clone.
The table can be modified after cloning; as such, a primitive like `Object.assign` could be built on top of this. The table can be modified after cloning; as such, a primitive like `Object.assign` could be built on top of this.
`table.clone(t)` is functionally equivalent to the following code, but it's more ergonomic (on the account of being built-in) and significantly faster: `table.clone(t)` is functionally equivalent to the following code, but it's more ergonomic (on the account of being built-in) and significantly faster: