Enumerable.Range 实现

Enumerable.Range implementation(Enumerable.Range 实现)

问题描述

What is the precise implementation of Enumerable.Range in .Net; preferable .Net 4? Is it a yielded for-loop? A custom implementation (IEnumerable, IEnumerator) or?

The accepted answer on this question should give you the answer:

public static class Enumerable {
    public static IEnumerable<int> Range(int start, int count) {
        var end = start + count;
        for(var current = start; current < end; ++current) {
            yield return current;
        }
    }
}

This isn't the exact code, as there is a lot of error checking etc. going on within the Range method, and internally, it calls other methods, however, the quoted code above is the "essence" of the Range routine.

Examining the code in Reflector should provide you with far more information.

这篇关于Enumerable.Range 实现的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！