Go有lambda表达式或类似的东西吗？ [英] Does Go have lambda expressions or anything similar?

问题描述

Go是否支持lambda表达式或类似的东西？

Does Go support lambda expressions or anything similar?

我想从使用lambda表达式的另一种语言（Ruby）移植库。

I want to port a library from another language that uses lambda expressions (Ruby).

推荐答案

Here is an example, copied and pasted carefully:

package main

import fmt "fmt"

type Stringy func() string

func foo() string{
  return "Stringy function"
}

func takesAFunction(foo Stringy){
  fmt.Printf("takesAFunction: %v\n", foo())
}

func returnsAFunction()Stringy{
  return func()string{
    fmt.Printf("Inner stringy function\n");
    return "bar" // have to return a string to be stringy
  }
}

func main(){
  takesAFunction(foo);
  var f Stringy = returnsAFunction();
  f();
  var baz Stringy = func()string{
    return "anonymous stringy\n"
  };
  fmt.Printf(baz());
}

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