Introduction: Dart

What is Dart?

Dart is a client-optimized language for fast apps on any platform 

Dart is an open-source general-purpose programming language. It is originally developed by Google. Dart is an object-oriented language with C-style syntax. It supports programming concepts like interfaces, classes, unlike other programming languages Dart doesn’t support arrays. Dart collections can be used to replicate data structures such as arrays, generics, and optional typing.

Dart is a single-threaded language with an Event loop much like JavaScript in your browser and Node.js. But it supports creating other threads to launch background jobs AKA asynchronous programming.

 

Setting Up the Local Environment

Using the Text Editor

Examples of a few editors include Windows Notepad, Notepad++, Emacs, vim or vi, etc. Editors may vary from one Operating System to another. The source files are typically named with the extension ".dart".

Installing the Dart SDK

The current stable version of Dart is 1.21.0. The dart sdk can be downloaded from −

 

 Dart Installation

Comments

Post a Comment

Popular posts from this blog

Flutter: Exploring more widgets

Image
Checkbox A checkbox is a type of input component which holds the Boolean value. It is a GUI element that allows the user to choose multiple options from several selections . Here, a user can answer only in yes or no value. A marked/checked checkbox means yes, and an unmarked/unchecked checkbox means no value. Typically, we can see the checkboxes on the screen as a square box with white space or a tick mark. A label or caption corresponding to each checkbox described the meaning of the checkboxes. In this article, we are going to learn how to use checkboxes in Flutter. In Flutter , we can have two types of checkboxes: a compact version of the Checkbox named "checkbox" and the "CheckboxListTile" checkbox, which comes with header and subtitle. The detailed descriptions of these checkboxes are given below:       Flutter Radio Button A radio button is also known as the options button which holds the Boolean value . It allows the user to choose only one option f
Read more

Flutter: Everything is a widget

Image
  Widgets The core concept of the Flutter framework is In Flutter, Everything is a widget . Widgets are basically user interface components used to create the user interface of the application. In Flutter , the application is itself a widget. The application is the top- level widget and its UI is build using one or more children (widgets), which again build using its children widgets. This composability feature helps us to create a user interface of any complexity. For example, the widget hierarchy of the hello world application (created in previous chapter) is as specified in the following diagram −   Here the following points are worth notable − MyApp is the user created widget and it is build using the Flutter native widget, MaterialApp . MaterialApp has a home property to specify the user interface of the home page, which is again a user created widget, MyHomePage . MyHomePage is build using another flutter native widget, Scaffold Scaffold has two properties – body an
Read more

Food Delivery App 5 - Firebase Storage for Profile Picture

Image
  Adding Images to Firebase Storage We can use image picker to get our images from gallery. So to add the selected images to Firebase Storage, we can create a edit icon to save the images to storage uploadPic   Widget build(BuildContext context) { Future getImage() async { var image = await ImagePicker.pickImage(source: ImageSource.gallery); setState(() { _image = image; print('Image Path $_image'); }); } Future uploadPic(BuildContext context) async{ String fileName = basename(_image.path); StorageReference firebaseStorageRef = FirebaseStorage.instance.ref().child(fileName); StorageUploadTask uploadTask = firebaseStorageRef.putFile(_image); StorageTaskSnapshot taskSnapshot=await uploadTask.onComplete; setState(() { print("Profile Picture uploaded"); Scaffold.of(context).showSnackBar(SnackBar(content: Text('Profile Picture Uploaded')));
Read more