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...
Here we have to pass a top level function. Let's name itcall back dispatcherregisterHeadlessTaskmethod. Then we define the tasks that need to run in the background: Configure BackgroundFetch Future<void> initPlatformState() async { _// Configure BackgroundFetch. _var status = await Backgro...
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
An alternative approach is to pass the API key with the--dart-defineflag at compile time. This means that we can run the app like this: flutterrun--dart-defineTMDB_KEY=a1b2c33d4e5f6g7h8i9jakblc Then, inside our Dart code, we can do: ...
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...
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...
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...
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...
It is important to understand the concepts of “frailty” and “cachexia” to accurately define sarcopenia because the criteria for defining these conditions overlap. Sarcopenia is characterized by the loss of muscle mass and function, whereas frailty is defined as a multisystem impairment associated ...