C＃：这怎么能假设？ [英] C#: how can this assume things?

问题描述

using System;
static class boolclass
{
	public static void Main() 
	{
	int a = 1;
int b = 2;
// Which one is greater?
bool greaterAB = (a > b);
// Is 'a' equal to 1?
bool equalA1 = (a == 1);
// Print the results on the console
if (greaterAB )
{
Console.WriteLine("A > B");
}
else
{
Console.WriteLine("A <= B");
}
Console.WriteLine("greaterAB = " + greaterAB);
Console.WriteLine("equalA1 = " + equalA1);
// Console output:
// A <= B
// greaterAB = False
// equalA1 = True
Console.ReadKey(true);
	}
}

这一点---

This point---

if (greaterAB )

是否假设

Does it assume that

if (greaterAB)

是

is

if (greaterAB == True)

更多或者更少的布尔默认值是false，所以即使假定这个，它也应该假设 -

More or less boolean default value is false so even if it assumes this, it should assume--

if (greaterAB == False)

我尝试了什么：



谷歌搜索它但我找不到任何我能理解或与之相关的东西。

What I have tried:

Googled it but I did not find anything which I could understand or is related to this.

推荐答案

if (greaterAB)

和

and

if (greaterAB == true)

是等价的，第一个版本应该是首选。



在C＃中，您无法使用未初始化的标识符，实际上您初始化 \\ n \\ n \\ n \\ n \\ n \\ n $ $ ：

are equivalent and the first version should be preferred.

In C# you can't use an un-initialized identifier and in fact you initialize greaterAB:

bool greaterAB = (a > b);

所以在这一点上它反映了 a 是否大于 b 以及布尔值的默认值 false 与所有这些无关。现在，如果您已将 greaterAB 声明为类变量（这没有多大意义），那么它将被初始化为默认值 false 第一次使用静态类，或者如果它是非静态类，则实例化该类的对象。

So at this point it reflects the fact whether a is greater than b and a boolean's default value of false has nothing to do with all this. Now if you had declared greaterAB as a class variable (which wouldn't make much sense) then it would be initialized to the default value of false the first time the static class is being used or, if it's a non-static class, an object of that class is instantiated.

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