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declarative function composition - golang
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package main | |
import "fmt" | |
type F func(i int) int | |
func (f F) compose(inner F) F { | |
return func(i int) int { return f(inner(i)) } | |
} | |
func main() { | |
var f1 F = func(i int) int { | |
return i * 2 | |
} | |
var f2 F = func(i int) int { | |
return i + 1 | |
} | |
var f3 F = func(i int) int { | |
return i + 10 | |
} | |
f := f1.compose(f2).compose(f3) | |
fmt.Println(f(2)) | |
fmt.Println("end") | |
} |
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