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实现趁手的英语词典的功能?

zhouchongzxc 2020 年3 月 29 日 01:06 2

Thunk是什么? 一头雾水 Programming

从 Section 2.9. Assignment of The Scheme Programming Language 中看到thunk这个概念, Local state is sometimes useful for caching computed values or allowing a computation to be evaluated lazily , i.e., only once and only on demand. The procedure lazy below accepts a thunk , or zero-argument procedure, as an argument. Thunks are often used to “freeze” computations that must be delayed for some reason, which is exactly what we need to do in this situation. When passed a thunk t , lazy returns a new thunk …

你可以用thunk封装三个步骤

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