Working with Strings in Scala
IntelliJ IDEA lets you add different intentions for strings and perform different actions with strings in Scala. IntelliJ IDEA also supports the Scala multi-line strings feature. This feature lets you format literals and helps your code to look more orderly.
- Inserting Gap with Concatenation into a String
- Converting a String Concatenation into Interpolated String
- Converting a String into a Multi-line String and Vice Versa
- Inserting a Replace Intention
- Inserting an Inject Language/Reference Intention
- Editing Multi-line String Settings
Inserting Gap with Concatenation into a String
- In your editor, enter a string and press Alt + Enter. The list of appropriate intentions opens.
- Select Insert gap with concatenation ("+ +") and press Enter. Now you can insert a value into your string. You can evaluate the result in the Scala Console window.
Converting a String Concatenation into Interpolated String
For the Scala version 2.10 and later you have the ability to convert a string concatenation into the interpolated string.
- Select a value with concatenation in your string and press Alt + Enter. The list of appropriate intentions opens.
- Select Convert to interpolated string, press Enter and view the result.
- You can also choose an option Convert to formatted string and get your basic Java formatted string.
Converting a String into a Multi-line String and Vice Versa
- Enter your string, press Alt + Enter and select Convert to """string""" option in the drop-down list of intentions. Converting to multi-line strings removes escaped sequences such as '\\' or '\n'.
- You also can convert the multi-line string into the regular string. Press Alt + Enter to open the drop-down list of intentions. Select Convert to "string" and press Enter. View the result.
- To start entering a multi-line string, simply type triple quotes in your editor. If you press Enter, it will automatically invoke stripMargin method. The stripMargin method removes the left-hand part of a multi-line string up to a specified delimiter. The white spaces are also preserved. Please see the following example:
Inserting a Replace Intention
The replace("\r"," ") intention lets you keep the caret in the correct place on the next line in the multi-line strings regardless of what operating system you have at the moment.
- Enter a multi-line string, press Alt + Enter and select the appropriate intention from the drop-down list.
Inserting an Inject Language/Reference Intention
You can inject language or a reference into your multi-line string literals.
- Enter a multi-line string, press Alt+ Enter and select Inject Language/Reference intention from the drop-down list. The list of available languages opens.
- Choose the appropriate one and press Enter. To cancel the language injection, simply choose the Un-Inject Language/Reference intention.
Editing Multi-line String Settings
You can set a different format for multi-line strings' options such as Margin char indent or Margin Char. You can also disable a multi-line strings support.
- In the main menu, select .
- On the Scala page, select the Multi-line strings tab.