Dart cheatsheet
Useful libraries
Standard library
- dart:async - Enables async/await functions
- dart:io - For read/write operations on the local filesystem
- https://api.dart.dev/stable/2.10.2/dart-io/Directory-class.html
- dart:convert - Used for, among other things, JSON encoding and decoding
print('Hello, World!');
Basic function
void main() { print('Hello, World!'); }
Run Dart script from the command line
dart /path/to/script.dart
Directory
var myDir = new Directory('/home/user/dir/');
List files in a directory
var myDir = new Directory('/home/user/dir/');
void checkDir(theDir) {
theDir.exists().then((isThere) {
isThere ? print('exists') : print('non-existent');
listDir(theDir);
});
}
void listDir(theDir) {
theDir.list(recursive: true, followLinks: false)
.listen((FileSystemEntity entity) {
print(entity.path);
});
}
checkDir(myDir);