Code Issues of the dead code type for members and blocks
Here are several of the code issues, which highlight redundant and unnecessary code blocks that may be safely removed for improving code readability.
Empty event handler
Cause:
An event is the mechanism for a class that notifies its clients when something happens. Events provide add additional methods (event handlers) to be triggered upon an external event. As an empty event handler does nothing, there is no need for it. An empty handler can be safely removed, which will improve code readability.
Sample:
How to fix:
- Apply the Remove Empty Handler code provider:
Empty finally block
Cause:
A code inside a finally block is executed when a control leaves a try statement and is guaranteed to be executed no matter what happens, including exceptions and return statements. An empty finally block does not make sense, because nothing will happen when it receives a control. Thus, an empty finally block is redundant and can be safely removed, which will improve code readability.
Sample:
How to fix:
- Remove an empty finally block (including a try block if there is no catch block):
Redundant private setter
Cause:
You cannot modify the value of a backing field inside the private setter outside of the current class. Also, if there are no assignments to the property in the current class, it doesn’t make sense to declare a private setter at all. In this case, you can safely remove the private setter to improve code readability.
Sample:
How to fix:
- Apply the Remove Private Setter refactoring:
Unused member
Cause:
A member which is not referenced anywhere (unused) in the code is useless and can be safely removed to clean up the code and improve readability.
Sample:
How to fix:
- Remove the unused member.
Unused declaration
Cause:
Similar to the Unused Member code issue, this code issue highlights variables that are not used in the code. Removing such variables will improve code readability.
Sample:
How to fix:
- Remove the variable its assignments, if any.