update docs DefaultIfEmptyExtension #780
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This pull request includes a small change to the
packages/rxdart/lib/src/transformers/default_if_empty.dartfile. The change improves the documentation for theDefaultIfEmptyExtensionextension by adding a more detailed description of its functionality.Documentation improvement:
packages/rxdart/lib/src/transformers/default_if_empty.dart: Updated the comment to explain that the extension allows the Stream class to emit a single default item if the source Stream emits nothing.