use_function_type_syntax_for_parameters

Use generic function type syntax for parameters.

This rule is available as of Dart 2.1.1.

Rule sets: recommended, flutter

This rule has a quick fix available.

Use generic function type syntax for parameters.

BAD:

Iterable<T> where(bool predicate(T element)) {}

GOOD:

Iterable<T> where(bool Function(T) predicate) {}

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

linter:
  rules:
    - use_function_type_syntax_for_parameters