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pub.dev "empty" keyword

is_dart_empty_or_not 0.4.0
A Dart package that provides extensions for checking empty or zero values
6 versions - Latest release: 9 days ago - 1 stars on GitHub
toolbox 1.2.0
A comprehensive utility library for Dart and Flutter projects.
13 versions - Latest release: over 2 years ago - 3 stars on GitHub