Extract constant

As Extract Variable, the Extract Constant refactoring lets you extract a specified value to a corresponding constant.

The animation below demonstrates how to extract a specific word from a string to a constant:

To extract a constant:

Select a value to refactor or place the caret at a string containing the required value.
In the main menu, go to Refactor | Extract/Introduce | Constant Ctrl+Alt+C.
(Optional) If you place the caret at a place containing several expressions available for extracting, select the required expression and press Enter:
(Optional) If more than one occurrence of the expression is found, specify whether you wish to replace only the selected occurrence or all the found occurrences with the new variable:
Specify the constant name and press Enter.

Example

                    puts "Hello from JetBrains"
                    puts "Goodbye from JetBrains"
                

                    NAME = "JetBrains"
                    puts "Hello from #{NAME}"
                    puts "Goodbye from #{NAME}"
                

Last modified: 04 April 2024