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Added assert call alternative

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Vyacheslav Egorov 2021-06-21 16:04:04 +03:00
parent 560ffd520f
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rfcs/syntax-nil-forgiving-operator.md
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@ -81,3 +81,10 @@ It might be useful to warn about unnecessary uses of this operator when the valu
### Bad practice
The operator might be placed by users to ignore/silence correct warnings and lower the strength of type checking that Luau provides.
## Alternatives
Aside from type assertion operator `::` it should be possible to place `assert` function calls before the operation.
Type refinement/constraints should handle that statement and avoid warning in the following expressions.
But `assert` call will introduce runtime overhead without adding extra safety to the case when the type is nil at run time, in both cases an error will be thrown.