main.dart (String, int) getUserInfo() { return ('Bob', 40); } void main() { final userInfo = getUserInfo(); print('Name: ${userInfo.$1}'); print('Age: ${userInfo.$2}'); } In this program, we define a function that returns a record containing a name and age. We then ...
RegExpis used to define a regular expression. Dart regular expressions have the same syntax and semantics as JavaScript regular expressions. Dart regex hasMatch ThehasMatchfunction checks whether the regular expression has a match in the specified string. main.dart void main() { var words = <St...
How to define getter and setter functions in JavaScript - GetterWhen a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.Setter
the promise will be solved. This non-blocking code runs on a separate thread and notifies the main thread about its completion or failure of a task. Try-catch is used in a function to handle the errors synchronously. Let’s
This is in line with how we define a function: return type first then function name then list of arguments then function body A function definition. 1: return type, 2: function name, 3: list of arguments, 4: function body This is more intuitive than declaring a FutureProvider.family<TMDB...
Passing keys as command line arguments with--dart-defineor--dart-define-from-file Loading keys from a.envfile with theENViedpackage So which one should we choose? Options 1 and 3 are similar as they both require the API key(s) to be stored in a Dart file. For this reason, the file...
To define a fraction for updating the weights, you use the alpha parameter, also called the learning rate. If you decrease the learning rate, then the increments are smaller. If you increase it, then the steps are higher. How do you know what’s the best learning rate value? By making...
The Dart VM currently accepts the parameter --old_gen_heap_size=%MB to define the maximum size of the old gen heap size (in MB). When compiling a Dart "script" to a self-contained executable (dart compile exe foo.dart), it comes with a D...
First, you need to create a variable to define the speed of the player’s forward movement. Create a Float variable named ForwardSpeed and set its default value to 2000. Next, make sure you are in the Event Graph and then locate the Event Tick node. Create the following setup: By multi...
below the images task in gulpfile.js to define a css processing task: /*** CSS task ***/ const cssConfig = { src : dir.src + 'scss/main.scss', watch : dirsrc + 'scss/**/*', build : dir.build+ 'css/', sassOpts: { sourceMap: devBuild, imagePath : '/images/', precision...