# Easy - Pick
# question
Implement the built-in Pick<T, K> generic without using it.
不要使用内置的 Pick<T, K>，自己实现一个。
Constructs a type by picking the set of properties K from T.
从类型 T 中选择出属性 K，构造成一个新的类型。
For example:
interface Todo {
title: string
description: string
completed: boolean
}
type TodoPreview = MyPick<Todo, 'title' | 'completed'>
const todo: TodoPreview = {
title: 'Clean room',
completed: false,
}
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# answer
type MyPick<T,K extends keyof T> = {
[P in K]: T[K]
};
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