在C＃中检查可空布尔是否正确的最快方法是什么？

Question

Wondering if there is a simpler way to check for a nullable bool being true.

I find myself doing code like this a lot which gets real bulky. Any faster way to do it?

bool? x = false;
if (x.hasValue && x.Value) ...

Seems like there must be a clean faster way to check for true

Answer 1

Use GetValueOrDefault :

if(x.GetValueOrDefault(false))

You can also use this with other types.

Answer 2

if (x == true)

那应该工作并且最短

Answer 3

May be many developers are not familiar with this but you can use the null coalesce operator (??) , as shown below:

    int? x = null;

    // Set y to the value of x if x is NOT null; otherwise, 
    // if x = null, set y to -1. 
    int y = x ?? -1;

and for condition check :-

if (nullableBool ?? false) { ... }

and another option is GetValueOrDefault Method

if (nullableBool.GetValueOrDefault(false)) 
{
}