我已经看到两种不同的方法，使一个布尔返回方式：

I've now seen two different ways to make a boolean returning method:

bool Case1()
{
    if (A)
        return true;
    else
        return false;
}
bool Case2()
{
    if (A)
        return true;
    return false;
}

哪一个是更快？是否有意义，以不写其他只是为了节省一条线，使其更清晰，或者是有一个微不足道的性能提升？

Which one is faster? Does it make sense to not write else just to save a line, make it clearer, or is there a negligible performance gain?

推荐答案

即使我们看看他们的 IL code，它们有相同的 IL code ，所以它们之间没有性能差异。 使用的其中一个更便于你阅读

No.

Even when we look at their IL code, they have the same IL code, so there is no performance difference between them. Use the one which is more readable for you.

.method private hidebysig instance bool  Case1() cil managed
{
  // Code size       9 (0x9)
  .maxstack  1
  .locals init ([0] bool CS$1$0000,
           [1] bool CS$4$0001)
  IL_0000:  nop
  IL_0001:  ldc.i4.0
  IL_0002:  stloc.1
  IL_0003:  ldc.i4.1
  IL_0004:  stloc.0
  IL_0005:  br.s       IL_0007
  IL_0007:  ldloc.0
  IL_0008:  ret
} // end of method Program::Case1

看看这些作品code为他们的表演;

Look at these pieces of code for their performances;

http://ideone.com/8Sc7Ho - >内存：33856 KB

http://ideone.com/8Sc7Ho --> Memory: 33856 kB

http://ideone.com/MrnaAl - >内存：33808 KB

http://ideone.com/MrnaAl --> Memory: 33808 kB

所以，如果你甚至可以用它们10.000倍，没有什么可担心的。

So if you use them even 10.000 times, there is nothing to worry about.