?:操作员与.If 语句性能 [英] ?: Operator Vs. If Statement Performance

问题描述

我一直在尝试优化我的代码，使其更加简洁和可读，并希望这样做不会导致性能下降.我认为我的更改可能会减慢我的应用程序，但它可能只是在我的脑海中.之间是否有任何性能差异:

I've been trying to optimize my code to make it a little more concise and readable and was hoping I wasn't causing poorer performance from doing it. I think my changes might have slowed down my application, but it might just be in my head. Is there any performance difference between:

Command.Parameters["@EMAIL"].Value = email ?? String.Empty;

和

Command.Parameters["@EMAIL"].Value = (email == null) ? String.Empty: email;

和

if (email == null)
{
    Command.Parameters["@EMAIL"].Value = String.Empty
}
else
{
    Command.Parameters["@EMAIL"].Value = email
}

我对可读性的偏好是空合并运算符，我只是不希望它影响性能.

My preference for readability would be the null coalescing operator, I just didn't want it to affect performance.

推荐答案

恕我直言，优化可读性和理解性 - 与您在现实世界中花费的时间相比，任何运行时性能提升都可能微乎其微几个月后回到这段代码，试着理解你最初在做什么.

IMHO, optimize for readability and understanding - any run-time performance gains will likely be minimal compared to the time it takes you in the real-world when you come back to this code in a couple months and try to understand what the heck you were doing in the first place.

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