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Fix small error in polymorphic-variant.mdx #181

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bobzhang merged 1 commit into from
Jan 11, 2021
Merged

Fix small error in polymorphic-variant.mdx #181

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2 changes: 1 addition & 1 deletion pages/docs/manual/latest/polymorphic-variant.mdx
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Expand Up @@ -261,7 +261,7 @@ let other = [#Green]
let all = Belt.Array.concat(colors, other)
```

As you can see in the example above, the type checker doesn't really care about the fact that `color` is not annotated as an `array<rgb>` type.
As you can see in the example above, the type checker doesn't really care about the fact that `other` is not annotated as an `array<rgb>` type.

As soon as it hits the first constraint (`Belt.Array.concat`), it will try to check if the structural types of `colors` and `other` unify into one poly variant type. If there's a mismatch, you will get an error on the `Belt.Array.concat` call.

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