Use the this keyword for codeunit self-reference
APPLIES TO: Business Central 2024 release wave 2 and later.
The this keyword is known from many programming languages such as C#, JavaScript, and Python. The this keyword can be used in codeunits in AL as a self-reference, and it allows passing the current object as an argument to methods. Additionally, using the this keyword enhances readability in larger methods by clearly indicating whether a variable is in the global or local scope.
Scenarios for using this
The main benefits of using the this keyword are:
- It allows codeunits to pass a reference to the current object (
this) as an argument to another method. - It improves readability by indicating that a referenced symbol is a member of the object itself.
The CodeCop rule AA0248 is enabled by default with a severity level of hidden. Hidden means that it appears as three dots in the editor, but doesn't show up as a diagnostic in the Problems view in Visual Studio Code or in any pipelines. The CodeCop rule identifies where you can take advantage of using the this keyword. Additionally, a code action can help you update existing code to use the this keyword. Learn more in AL code actions.
Note
The newest version of the System Application has been updated to use the this keyword for referencing methods and globals within the same object.