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40 lines
1.1 KiB
Nim
40 lines
1.1 KiB
Nim
# Test overloading of procs when used as function pointers
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import strutils
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proc parseInt(x: float): int {.noSideEffect.} = nil
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proc parseInt(x: bool): int {.noSideEffect.} = nil
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proc parseInt(x: float32): int {.noSideEffect.} = nil
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proc parseInt(x: int8): int {.noSideEffect.} = nil
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proc parseInt(x: TFile): int {.noSideEffect.} = nil
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proc parseInt(x: char): int {.noSideEffect.} = nil
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proc parseInt(x: int16): int {.noSideEffect.} = nil
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proc parseInt[T](x: T): int = echo x; 34
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type
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TParseInt = proc (x: string): int {.noSideEffect.}
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var
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q = TParseInt(parseInt)
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p: TParseInt = parseInt
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proc takeParseInt(x: proc (y: string): int {.noSideEffect.}): int =
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result = x("123")
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echo "Give a list of numbers (separated by spaces): "
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var x = stdin.readline.split.map(parseInt).max
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echo x, " is the maximum!"
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echo "another number: ", takeParseInt(parseInt)
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type
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TFoo[a,b] = object
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lorem: a
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ipsum: b
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proc bar[a,b](f: TFoo[a,b], x: a) = echo(x, " ", f.lorem, f.ipsum)
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proc bar[a,b](f: TFoo[a,b], x: b) = echo(x, " ", f.lorem, f.ipsum)
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discard parseInt[string]("yay")
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