How to reference another file in Dart?

Posted by Jessica Taylor | Updated on | Dart


If you want to reference another file in Dart? You will be importing the filename.dart and not the name of your library. So if the name of your library is: myLib and it is saved …

How to call a super constructor in Dart?

Posted by Pinki | Updated on | Dart


Want to call a super constructor in Dart? Yes, it is, the syntax is close to C#, here is an example with both default constructor and named constructor: If you want to initialize instance variables …

How to convert a double to an int in Dart?

Posted by Andre Scott | Updated on | Dart


Want to convert a double to an int in Dart? Round it using the round() method:

Console.log in Dart Language

Posted by Pinki | Updated on | Dart


Console.log in Dart Language. A basic top-level print function is always available in all implementations of Dart (browser, VM, etc.). Because Dart has string interpolation, it’s easy to use that to print useful stuff too:

Do you need to use the “new” keyword in Dart?

Posted by Jennifer | Updated on | Dart


Do you need to use the “new” keyword in Dart? The const keyword can, however, change a value that would not be a const implicitly to a const. So you will have to explicitly specify …

How to perform runtime type checking in Dart?

Posted by Jessica Taylor | Updated on | Dart


Want to perform runtime type checking in Dart? The instanceof-operator is called is in Dart. The spec isn’t exactly friendly to a casual reader, so the best description right now seems to be http://www.dartlang.org/articles/optional-types/. Here’s …

How to parse a string into a number with Dart?

Posted by Pinki | Updated on | Dart


Want to parse a string into a number with Dart? You can parse a string into an integer with int.parse(). For example: You can parse a string into a double with double.parse(). For example:

Passing Data to a Stateful Widget

Posted by Jennifer | Updated on | Dart


Passing Data to a Stateful Widget. Don’t pass parameters to State using it’s constructor. You should only access these using this.widget.myField. Not only editing the constructor requires a lot of manual work ; it doesn’t …

What is the difference between functions and classes to create reusable widgets?

Posted by Andre Scott | Updated on | Dart


What is the difference between functions and classes to create reusable widgets? It’s just ideal that those functions return a StatelessWidget, so optimisations can be made, such as making the StatelessWidget const, so it doesn’t …

Flutter SDK Set Background image

Posted by Pinki | Updated on | Dart


Flutter SDK Set Background image. I’m not sure I understand your question, but if you want the image to fill the entire screen you can use a DecorationImage with a fit of BoxFit.cover. For your …

How to dismiss the on screen keyboard?

Posted by Editorial Staff | Updated on | Dart


Want to dismiss the on screen keyboard? You can dismiss the keyboard by taking away the focus of the TextFormField and giving it to an unused FocusNode:

How does the const constructor actually work?

Posted by Rohit Kumar | Updated on | Dart


How does the const constructor actually work? Very well explained in detail but for the users who are actually looking for the usage of a const constructor.

How to detect the host platform from Dart code?

Posted by Jessica Taylor | Updated on | Dart


Want to detect the host platform from Dart code? Use the below example code to detect the host platform from Dart code.

Will Dart support the use of existing JavaScript libraries?

Posted by Pinki | Updated on | Dart


Will Dart support the use of existing JavaScript libraries? The answer is now Yes! Dart now ships a JS-interop library to use existing JavaScript code with your Dart app. Learn more here: https://www.dartlang.org/articles/js-dart-interop/

How to generate random numbers in Dart?

Posted by Andre Scott | Updated on | Dart


Want to generate random numbers in Dart? Use Random class from dart:math: This code was tested with the Dart VM and dart2js, as of the time of this writing.