Working with Type-Aware Highlighting

Scala type-aware highlighting lets you get an error analysis based on the Scala type system before you start the compilation process.

• Enabling or Disabling Type-Aware Highlighting on the Project Level
• Enabling or Disabling Type-Aware Highlighting on the File Level
• Working with Type-Aware Highlighting in Editor
• Disabling Type-Aware Highlighting Locally

Enabling or Disabling Type-Aware Highlighting on the Project Level

• Enable or disable the type-aware highlighting for your project by clicking or icon on the status bar. You can also use the Ctrl+ Alt+ Shift+ E shortcut.

  

Enabling or Disabling Type-Aware Highlighting on the File Level

• Open the file and on the status bar click Hector icon. If you disable Hector, then the type-aware highlighting will be also disabled. Each time you enable or disable the type-aware highlighting, you can see the notification of the status's change in the Event log.

Working with Type-Aware Highlighting in Editor

• Let's see how it works:

  

  As you can see, the expression is wrong and the value is highlighted.
  
  If the type-aware highlighting is disabled, the error is not highlighted and it might be quite difficult to spot:

  

• You can also enable the highlighting based on expression type inference.
  
  Consider the following example:

  

  As the pop-up message suggests, the expression type is wrong and is highlighted.

Disabling Type-Aware Highlighting Locally

• Highlight the code and on the main menu select Code | Surround With.
• When Surround With window opens, select the / * _ * /.../ * _ * / option from the list.

  

  After you've selected the appropriate option your code looks like this:

  

  As a result, the error is not highlighted.