$ sudo apt-get update
$ sudo apt-get install apt-transport-https
$ sudo sh -c 'wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -'
$ sudo sh -c 'wget -qO- https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
main(List<String> args) {
var sum = 0;
var given_list = [1, 2, 3, 4, 5];
for (var i = 0; i < given_list.length; i++) {
sum += given_list[i];
}
print("Sum (for loop): ${sum}");
sum = 0;
given_list.forEach((e) => sum += e);
print("Sum (forEach): ${sum}");
sum = given_list.reduce((value, element) => value + element);
print("Sum (reduce): ${sum}");
sum = given_list.fold(0, (previous, current) => previous + current);
print("Sum (fold): ${sum}");
}choco install dart-sdkDart is a Programmign language mainly used for Flutter.analyzer:
- enable-experiment:
- non-nullable
analyzer:
enable-experiment:
- non-nullable
console.log(sass.info);
// dart-sass 1.32.10 (Sass Compiler) [Dart]
// dart2js 2.0.0 (Dart Compiler) [Dart]
echo 'Internal Server Error';var values = [
{'userId': 1, 'rating': 4.5},
{'userId': 2, 'rating': 4.0},
{'userId': 3, 'rating': 3.5},
{'userId': 4, 'rating': 3.0}
];
var result = values.map((m) => m['rating']).reduce((a, b) => a + b) / values.length;
print(result);var ints = const <int?>[0, null];
var zero = ints[0];
var one = zero! + 1;
var zeroOne = <int?>[zero, one];