dart_try

Description:

dart try

The Try control gives us the ability write safe code without focusing on try-catch blocks in the presence of exceptions.
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Before #
void main() {
String? randomWord;

try {
randomWord = getRandomWordFromServer();
} catch (e) {
randomWord = 'fallback';
}
}
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With Try #
void main() {
final randomWord = Try.of(() => getRandomWordFromServer()).orElseGet('fallback');
}
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Immutability #
With try catch we will have to split initialization and declaration.
This forces us to make variables mutable, although they might only get assigned a value once.
Null Safety #
If we use try catch control flow we might have a different Variable type. Below we declare randomWord
to be nullable. Now getRandomWordFromServer might return String? as well. We lose our strict null safety.
It's easier to read #
Features #

Wrap Code that might throw an error with Try.of(() => doSomething())
Get result immediately if sure there is no error
Return alternative the event of an error

tryable.orElse(() => elseFunction());
tryable.orElseGet('value')