tuple_dart

Description:

tuple dart

Tuple dart #
A library providing a tuple data structure for Dart.

No dependency
Easy usage
Support tuple1 - tuple8
ideal for use with compute
Used by the itertools package

Usage #
import 'package:tuple_dart/tuple.dart';
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or
import 'package:tuple_dart/tuple_dart.dart';
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Example #
import 'package:tuple_dart/tuple.dart';

void print2(Object? first, Object? second) {
print('$first $second');
}

void main() {
final tuple = Tuple2('first', 2); // type Tuple2<String, int>
tuple.apply(print2); // output: "first 2";
final tuple2 = tuple.withItem2('second'); // type Tuple2<String, String>
tuple2.apply(print2); // output: "first second";
// or equal
print2.tuplized(tuple); // output: "first 2";
// also R Function(Tuple<T1...TN>) has detuplized getter

// tuplize transformation
// R Function(T1...TN) -> R Function(Tuple<T1...TN>);
// final print2tuplized = print2.tuplized;

// detuplized transformation
// R Function(Tuple<T1...TN>) -> R Function(T1...TN);
// final print2detupled = print2tuplized.detuplized;

// compatible with MapEntry
final tuples = [
Tuple2('1', 111),
Tuple2('2', 222),
Tuple2('3', 333),
Tuple2('4', 444),
];

print(Map<String, int>.fromEntries(tuples));
}

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ideal for use with compute #
import 'package:tuple_dart/tuple.dart';
import 'package:flutter/foundation.dart';

double hardCalculation(double a, double b, double c) {
double result = 0.0;
for (int i = 1; i < 1000; i++) {
result = i * a + b * c / i;
}
return result;
}

void main() async {
final result = await compute(hardCalculation.tuplized, Tuple3(0.1, 2.0, 10.0));
print(result);
}
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Links #
Pub dev
Documentation
Issue tracker
Features and bugs #
Please file feature requests and bugs at the issue tracker.