ReSharper 2018.2 Help

Invert Boolean refactoring

ReSharper | Refactor | Invert Boolean…
ReSharper_InvertBool

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, ReSharper lets you specify a new name and invert all its usages, i.e. if you refactor private bool isEnabled; to private bool isDisabled;, ReSharper will make sure that, for example, if(isEnabled) becomes if(!isDisabled) everywhere.
If you apply this refactoring to a boolean method, ReSharper 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 refactoring

After 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 File Structure window.

  2. Do one of the following:
    • Press Ctrl+Shift+R and then choose Invert Boolean

    • Right-click and choose Refactor | Invert Boolean in the context menu.

    • Choose ReSharper | Refactor | Invert Boolean… in the main menu.

  3. If no conflicts are found, ReSharper performs the refactoring immediately. Otherwise, it prompts you to resolve conflicts.

This feature is supported in the following languages and technologies:

Language: C#

Language: VB.NET

Language: C++

Language: HTML

Language: ASP.NET

Language: Razor

Language: JavaScript

Language: TypeScript

Language: CSS

Language: XML

Language: XAML

Language: Resx

Language: Build Scripts

Language: Protobuf

Language: JSON

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Last modified: 22 October 2018