按整数vs.日期时间排序 [英] Sort by Integer vs. by DateTime

问题描述

我是从.NET的角度讲的，但这可以扩展到使用类似逻辑的其他语言或框架.

I'm speaking from the .NET point of view but this could extend to other languages or frameworks that use similar logic.

假设通过DateTime属性对对象进行排序时，出于比较目的，将DateTime值转换为Ticks(即长整数)是否正确?结果，按DateTime排序的速度是否比按整数排序的速度慢很多(如果有的话)?

Is it correct to assume that when sorting objects by a DateTime property, the DateTime value is converted to Ticks (i.e., long integers) for comparison purposes? And as a result, the speed of sorting by DateTime is not much, if any, slower than sorting by integers?

推荐答案

是的，它比较刻度线.这是实际的实现:

Yes, it compares ticks. Here is actual implementation:

public int CompareTo(DateTime value) {
    long valueTicks = value.InternalTicks; 
    long ticks = InternalTicks; 
    if (ticks > valueTicks) return 1;
    if (ticks < valueTicks) return -1; 
    return 0;
}

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