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macaron package
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container/optional.dart
Optional<T>
map<R> abstract method
map<R> abstract method
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map<
R
>
abstract method
Optional
<
R
>
map
<
R
>(
R?
mapper
(
T
value
)
)
Implementation
Optional<R> map<R>(R? Function(T value) mapper);
macaron package
documentation
container/optional
Optional<T>
map<R> abstract method
Optional class