use_setters_to_change_properties

Use a setter for operations that conceptually change a property.

This rule is available as of Dart 2.0.0.

DO use a setter for operations that conceptually change a property.

BAD:

rectangle.setWidth(3);
button.setVisible(false);

GOOD:

rectangle.width = 3;
button.visible = false;

To enable the use_setters_to_change_properties rule, add use_setters_to_change_properties under linter > rules in your analysis_options.yaml file:

linter:
  rules:
    - use_setters_to_change_properties