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14 lines
262 B

interface IdFunc<Type> {
id: (balue: Type) => Type
ids: () => Type[]
}
// 需要指定显示类型
let obj: IdFunc<number> = { // 指定显示的类型为 number
id(value) {
return value
},
ids() {
return [1, 3, 5]
}
}