CLion
 
2023.3
Shortcuts: Windows
Get CLion
You are viewing the documentation for an earlier version of CLion.
  1. Work with source code
  2. Refactoring
  3. Extract
  4. Extract/Introduce variable

Extract/Introduce variable

Last modified: 11 February 2024

Refactor | Extract/Introduce | Variable

CtrlAlt0V

The Extract Variable refactoring puts the result of the selected expression into a variable. It declares a new variable and uses the expression as an initializer. The original expression is replaced with the new variable.

This refactoring is available for C/C++, Objective-C/C++, Python and JavaScript.

Extract a variable in-place

  1. In the editor, select the expression to be replaced with a variable.

  2. Press CtrlAlt0V or select Refactor | Variable from the context menu.

  3. If more than one occurrence of the selected expression is found, select Replace this occurrence only or Replace all occurrences in the popup.

    Extract variable - multiple occurrences

  4. Specify the name of the variable. You can choose from the list of suggestions or set another name.

    Extracting a variable

    If you want to apply automatic type declaration for the variable, set the Declare auto checkbox.

    When applicable, you can also declare a variable as const by setting Declare const:

    Extracting a variable - declare options

    note

    CLion saves your choice as default setting for the next attempt of the Extract variable refactoring.