![]() A minimal, easily runnable, and well-formatted program that illustrates your problem.If you need help debugging, you must include: Specify on named parameters without defaults.Īvoid annotating with dynamic when not required.Welcome to LearnProgramming! New? READ ME FIRST! Posting guidelines Frequently asked questions Subreddit rules Message the moderators Asking debugging questions Separate the control structure expression from its statement.Īlways_put_required_named_parameters_firstĪlways_require_non_null_named_parameters (Deprecated) Largely derived from the Dart style guide. These rules identify opportunities for style improvements, Test type arguments in operator =(Object other).Įquality operator = invocation with references of unrelated types.ĭo not use BuildContexts across async gaps. Prefer relative imports for files in lib/.ĭon’t use the Null type, unless you are positive that you don’t want void. Invocation of remove with references of unrelated types.īoolean expression composed only with literals.ĭon’t use more than one case with same value.ĭon’t use wildcard parameters or variables. contains with references of unrelated types. Iterable_contains_unrelated_type (Deprecated) Use case expressions that are valid in Dart 3.0.Ĭonditions should not unconditionally evaluate to true or to false. Only reference in scope identifiers in doc comments.Īvoid using deprecated elements from within the package in which they are declared.ĭO reference all public properties in debug methods.ĭon’t invoke asynchronous functions in non-async blocks.Īlways override hashCode if overriding =. Invocation of various collection methods with arguments of unrelated types. toString() in production code since results may be minified.Īvoid overriding a final field to return different values if called multiple times.Īvoid using web-only libraries outside Flutter web plugin packages.Ĭancel instances of. These rules identify possible errors and other mistakes in your code.Īvoid relative imports for files in lib/.Īvoid method calls or property accesses on a “dynamic” target.Īvoid_returning_null_for_future (Deprecated)Īvoid. The following is an index of all linter rules andĪ short description of their functionality.įor an auto-generated list containing all linter rules To learn more, see Quick fixes for analysis issues. Some rules can be fixed automatically using quick fixes. Removed These rules have been already been removed in the Deprecated These rules are no longer suggested for useĪnd might be removed in a future Dart release. Use these with caution and report any issues you come across. ![]() Experimental These rules are still under evaluation and might never be stabilized. They’re marked as experimental, deprecated, or removed. With the latest versions of the Dart language. Pub Possible issues with pub package setup.Įach rule has a status or maturity level: Stable These rules are safe to use and are verified as functional Style Matters of style, largely derived from the Dart style guide. TypesĮach rule belongs to one of the following groups: Errors Possible errors or mistakes in your code. Visit the documentation for enabling and disabling linter rules.Ĭheck out the #lints topic on pub.dev. Which is itself a superset of the core set that This rule set is a superset of the recommended set, Which the Flutter team encourages you to use flutter_lints Contains the flutter rule set, Use the rule set in the flutter_lints package, Or, better yet, use the recommended rule set,Ī superset of core that identifies additional issues We recommend using at least the core rule set, Which the following packages provide: lints Contains two rule sets curated by the Dart team. To avoid the need to individually select compatible linter rules,Ĭonsider starting with a linter rule set, ![]() Linter rules (sometimes called lints) can have false positives,Īnd they don’t all agree with each other.įor example, some rules are more appropriate for regular Dart packages,Īnd others are designed for Flutter apps. With details such as when you might want to use each rule, Individual rules sections of the analyzer documentation. Use the Dart linter to identify possible problems in your Dart code.įor information on how to enable and disable individual linter rules, see ![]()
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