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added return types in lambas #324

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Mar 26, 2024
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added return types in lambas #324

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14 changes: 14 additions & 0 deletions docs/user_docs/support/faq-kcl.md
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Expand Up @@ -2512,3 +2512,17 @@ worldString: world
s: Hello world
raw_s: Hello ${worldString}
```

## 59. How does KCL infer return types in lambdas?

For lambda(s),KCL automatically infers the return value type in the function body, although we can explicitly specify it. An example KCL code over here is:

``KCL
f1 = lambda t: Type1 {
Type2 {}
} # The type of f1 is (Type1) -> Type2

f2 = lambda t: Type1 -> Type2 {
Type2 {}
} # The type of f2 is (Type1) -> Type2
```