SHELL

dart

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);

dart

Dart is a Programmign language mainly used for Flutter.

dart

void main() {
    print(hello, dart!);
}

dart

assert(num.parse('42') is int);
assert(num.parse('0x42') is int);
assert(num.parse('0.50') is double);

dart

assert(num.parse('42') is int);
assert(num.parse('0x42') is int);
assert(num.parse('0.50') is double);

dart

if (year >= 2001) {
  print('21st century');
} else if (year >= 1901) {
  print('20th century');
}

for (final object in flybyObjects) {
  print(object);
}

for (int month = 1; month <= 12; month++) {
  print(month);
}

while (year < 2016) {
  year += 1;
}

dart

if (year >= 2001) {
  print('21st century');
} else if (year >= 1901) {
  print('20th century');
}

for (final object in flybyObjects) {
  print(object);
}

for (int month = 1; month <= 12; month++) {
  print(month);
}

while (year < 2016) {
  year += 1;
}

dart

1. Dart is a Programmign language that mainly used for Flutter.
2. It's designed for client development, such as for the web and mobile apps.
3. Developed by Google

dart

echo 'Internal Server Error';

dart

flutter clean
flutter pub get

dart

analyzer:
  enable-experiment:
    - non-nullable

dart

analyzer:
    - enable-experiment:
        - non-nullable

dart

flutter clean
flutter packages pub upgrade
flutter pub run build_runner build

dart

dart migrate --apply-changes

dart

dart --version

dart

$ dart pub get

dart

var ints = const <int?>[0, null];
var zero = ints[0]/*!*/;
var one = zero + 1;
var zeroOne = <int>[zero, one];

dart

var ints = const <int?>[0, null];
var zero = ints[0];
var one = zero! + 1;
var zeroOne = <int?>[zero, one];

dart

Dart is an open source, purely object-oriented, optionally typed, and a class-based language which has excellent support for functional as well as reactive programming. Unlike C# or Java, Dart is not bloated at all. In fact, it's a relatively simple, modern and highly efficient language to work with

dart

if (year >= 2001) {
  print('21st century');
} else if (year >= 1901) {
  print('20th century');
}

for (var object in flybyObjects) {
  print(object);
}

for (int month = 1; month <= 12; month++) {
  print(month);
}

while (year < 2016) {
  year += 1;
}

dart

console.log(sass.info);
// dart-sass    1.32.10 (Sass Compiler) [Dart]
// dart2js  2.0.0   (Dart Compiler) [Dart]

dart

You want to see something good.

That's the same thing

dart

Dart is a programming language which flutter uses. You can get started with it if you want. Happy coding