71 lines
608 B
Markdown
71 lines
608 B
Markdown
# Lambdas / Anonymous functions
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## Anonymous function
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```thp
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fun(Int x, Int y) -> Int {
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x + y
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}
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numbers.map(fun(x) {
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x * 2
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})
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```
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## Closure types
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By default closures **always** capture variables as **references**.
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```thp
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val mut x = 20
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val f = fun() {
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print(x)
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}
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f() // 20
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x = 30
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f() // 30
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```
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You can force a closure to capture variables by value.
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```thp
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fun(parameters) clone(variables) {
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// code
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}
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```
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```thp
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val mut x = 20
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val f = fun() clone(x) {
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print(x)
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}
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f() // 20
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x = 30
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f() // 20
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```
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## Lambdas
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```thp
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numbers.map {
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$0 * 2
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}
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```
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