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改造接口 unary #113

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cklwblove opened this issue Dec 20, 2022 · 0 comments

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cklwblove commented Dec 20, 2022

改造函数的接口，一元参数（unary），它的作用是把一个接收多个参数的函数，变成一个只接收一个参数的函数

function unary(fn) {
  return function oneArg(arg) {
      return fn(arg);
  }
}

["1","2","3","4","5"].map( unary( parseInt ) ); // [1,2,3,4,5]

二元就是 binary，或是函数式中的“黑话”dyadic；三元就是 tenary。顾名思义，它们分别代表的就是把一个函数的参数数量控制在 2 个和 3 个。

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