How to improve Cyclomatic Complexity?

Question

Cyclomatic Complexity will be high for methods with a high number of decision statements including if/while/for statements. So how do we improve on it?

I am handling a

Answer 1

Case 1 - deal with this simply by refactoring into smaller functions. E.g. the following snippet could be a function:

objectC = doThatMethod();
if(objectC != null)
{
 doXXX();
}
else{
 doYYY();
}

Case 2 - exactly the same approach. Take the contents of the else clause out into a smaller helper function

Case 3 - make a list of the strings you want to check against, and make a small helper function that compares a string against many options (could be simplified further with linq)

var stringConstants = new string[] { StringConstants.AAA, StringConstants.BBB etc };
if(stringConstants.Any((s) => e.PropertyName.Equals(s))
{
    ...
}