prefer_is_not_empty
Use isNotEmpty
for Iterable
s and Map
s.
This rule is available as of Dart 2.0.
Rule sets: core, recommended, flutter
This rule has a quick fix available.
Details
#PREFER x.isNotEmpty
to !x.isEmpty
for Iterable
and Map
instances.
When testing whether an iterable or map is empty, prefer isNotEmpty
over !isEmpty
to improve code readability.
BAD:
if (!sources.isEmpty) {
process(sources);
}
GOOD:
if (todo.isNotEmpty) {
sendResults(request, todo.isEmpty);
}
Usage
#To enable the prefer_is_not_empty
rule, add prefer_is_not_empty
under linter > rules in your analysis_options.yaml
file:
linter:
rules:
- prefer_is_not_empty
Unless stated otherwise, the documentation on this site reflects Dart 3.5.3. Page last updated on 2024-07-03. View source or report an issue.