Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
286 views
in Technique[技术] by (71.8m points)

c# - Ternary Expression Possible?

I'm not sure if the following statement is possible to write as one line (i.e. Ternary form).

if (A == B)
    FunctionA();
else 
    FunctionB();

Both FunctionA and FunctionB are type void.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

No. The conditional operator is only valid for non-void expressions. The point is to evaluate one of two expressions, and for that to be the result.

Basically: write the if statement. It's the idiomatic way of executing one action or another.

You could write an extension method like this:

// For demonstration purposes only. Please don't use in real life.
public static void Conditional(this bool result,
                               Action trueAction,
                               Action falseAction)
{
    Action action = result ? trueAction : falseAction;
    action();
}

Then:

(A == B).Conditional(FunctionA, FunctionB);

... but I'd strongly advise you not to.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...