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typescript #73

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ynchuan opened this issue Jan 30, 2020 · 0 comments

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ynchuan commented Jan 30, 2020

函数

interface Fn {
  (name: string): number
}
const fn1: Fn = function (name) {
  return name.length
}
const fn2 = function (name: string): number {
  return name.length
}
const fn3 = (name: string): number => {
  return name.length
}
function fn4(name: string): number {
  return name.length
}

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