JetBrains Rider 2017.2 Help

Invert Boolean refactoring

This refactoring allows you to automatically modify a boolean member so that its value is inverted. If you apply this refactoring to a boolean field or a property, JetBrains Rider lets you specify a new name and invert all its usages, i.e. if you refactor private bool isEnabled; to private bool isDisabled;, JetBrains Rider will make sure that, for example, if(isEnabled) becomes if(!isDisabled) everywhere.
If you apply this refactoring to a boolean method, JetBrains Rider lets you choose whether to invert its internal logic, usages, or both.

In the example below, we use this refactoring to invert the IsEven method. We specify a new name IsOdd and choose to invert both the internal logic and usages:

Before refactoringAfter refactoring
public bool IsEven(int input) { return input % 2 == 0; } public void Test(int value) { if (IsEven(value)) Console.WriteLine("\n the number is even"); }
public bool IsOdd(int input) { return input % 2 != 0; } public void Test(int value) { if (!IsOdd(value)) Console.WriteLine("\n the number is even"); }

To invert a boolean method

  1. Place the caret at the declaration or a usage of a boolean member in the editor, or select it in the Structure window.
  2. Do one of the following:
    • Press Ctrl+Shift+R and then choose Invert Boolean
    • Choose Refactor | Invert Boolean in the main menu.
  3. If no conflicts are found, JetBrains Rider performs the refactoring immediately. Otherwise, it prompts you to resolve conflicts.
Last modified: 17 November 2017