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Implement built-in option datatype and supporting functions #38

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julianhyde opened this issue May 12, 2020 · 1 comment
Closed

Implement built-in option datatype and supporting functions #38

julianhyde opened this issue May 12, 2020 · 1 comment

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@julianhyde
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Implement built-in option datatype and supporting functions.

To do this, improve type-resolution for data types with type parameters. (Allowing type parameters for user-defined datatypes is out of scope.)

Modify existing built-in functions (String.exact, List.getItem, List.mapPartial, List.find) that have option parameters or return type.
@julianhyde
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Fixed in b366112 (release 0.3).

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@julianhyde