Contents

avoid_positional_boolean_parameters

Contents

Avoid positional boolean parameters.

This rule is available as of Dart 2.0.

Details

#

From Effective Dart:

AVOID positional boolean parameters.

Positional boolean parameters are a bad practice because they are very ambiguous. Using named boolean parameters is much more readable because it inherently describes what the boolean value represents.

BAD:

dart
Task(true);
Task(false);
ListBox(false, true, true);
Button(false);

GOOD:

dart
Task.oneShot();
Task.repeating();
ListBox(scroll: true, showScrollbars: true);
Button(ButtonState.enabled);

Usage

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

analysis_options.yaml
yaml
linter:
  rules:
    - avoid_positional_boolean_parameters