vandadnp / flutter-tips-and-tricks Public

Did you know that in #Dart, every #class implicitly exports an #interface that can be #implemented (as opposed to #extended) by other classes? This is called "implicit interface".

Do you know how "const" constructors work in #Dart?

Did you know that in #Dart, it is actually preferred to use #async and #await over using raw #Futures?

In #Dart, you can use a combination of #Initializer #List plus default values for your class #member #fields to create elegant and handy convenience initializers

Did you know that in #Dart, you can extract elements of a certain type from your Lists using the #whereType #generic #function instead of calculating the #equality yourselves?

Do you know about #Type #Promotion in Dart?

"address" is an optional field of the "Person" class. If you look at the "doThis()" function you see that I'm saving the value of address in a local variable and then comparing it with null and then returning if it's null. The Dart compiler is intelligent enough to understand that after the if-statement, "address" is NOT null anymore since you've already compared it with null and returned from the function.

If you look at the "insteadOfThis" function, the first one, the Dart compiler cannot make the same assumption if you don't first store the value of address in a local variable. In that first function the Dart compiler, even after the if-statement, needs you to refer to address as an optional, using "address?" syntax.

The mechanism the Dart compiler uses in the "doThis()" function is called Type Promotion.

4 lines of #Dart code that include the #spread operator, #cascade #operator, #generics, #extensions, #private prefix and #getters

Functions as First Class Citizens in Dart

Oct	NOV	Dec
	07
2020	2021	2022

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README.md

Table of Contents

Split String by Length in Dart

Image Tint in Flutter

SlideTransition in Flutter

Expansion Panels and Lists in Flutter

Complete CRUD App in Flutter

SQLite Storage in Flutter

Circular Progress with Percentage in Flutter

Opening URLs in Flutter

Commodore 64 Screen in Flutter

Animated Lists in Flutter

CheckboxListTile in Flutter

- Operator on String in Dart

Dart Progress for Future<T>

Move Widget Shadows with Animation

Gallery with Blurred Backgrounds in Flutter

Custom Path Clippers in Flutter

Frost Effect on Images in Flutter

Custom Clippers in Flutter

Check if Website is Up or Down in Dart

Section Titles on ListView in Flutter

Circular Progress in Flutter

Displaying Scroll Wheels in Flutter

Post Messages to Slack with Dart

Unwrap List<T?>? in Dart

Avoiding UI Jitters When Switching Widgets in Flutter

Detect Redirects in Dart

Proportional Constraints in Flutter

Displaying Cupertino Action Sheets in Flutter

Rotating List<T> in Dart

Displaying SnackBars in Flutter

Custom Tab Bar Using ToggleButtons in Flutter

Hashable Mixins in Dart

Flutter Tips and Tricks in Terminal

Searching List<List<T>> in Dart

Cloning Objects in Dart

Color Filters in Flutter

Flattening Lists in Dart

Managing Duplicates in List<T> in Dart

FlatMap and CompactMap in Dart

Equality of List<T> in Dart

Constants in Dart

Displaying Scrollable Bottom Sheets in Flutter

YouTube Ad Remover in Dart

Fade Between Widgets in Flutter

Sort Descriptors in Dart

User Sortable Columns and Tables in Flutter

Content-Length of List<Uri> in Dart

Recursive Dot Notation on Maps in Dart

Allow User Selection of Text in Flutter

Placing Constraints on Widgets in Flutter

Animating Position Changes in Flutter

Transitioning Between Widgets in Flutter

Doubly Linked Lists in Dart

Reordering Items Inside List Views in Flutter

Custom Stream Transformers in Dart

Expanding Stream Elements in Dart

Consume Streams for a Duration in Dart

Shortening URLs in Dart

LimitedBox Widget as ListView Items in Flutter

Generically Convert Anything to Int in Dart

Validating URL Certificates in Dart

Displaying Popup Menus in Flutter

Implementing Drag and Drop in Flutter

Dismissing List Items in Flutter

Animating Widgets with Ease in Flutter

Displaying Tool Tips in Flutter

Displaying Assorted Widgets Inside TableView in Flutter

Page Indicator with Page View in Flutter

Animating and Moving a Floating Action Button in Flutter

Fading Network Image Widget in Flutter

Transparent Alert Dialogs in Flutter

Network Image Size in Dart

Animated Icons in Flutter

Custom Scroll Views in Flutter

`CheckboxListTile` in Flutter

`-` Operator on `String` in Dart

Dart Progress for `Future<T>`

Unwrap `List<T?>?` in Dart

Rotating `List<T>` in Dart

Searching `List<List<T>>` in Dart

Managing Duplicates in `List<T>` in Dart

Equality of `List<T>` in Dart

Content-Length of `List<Uri>` in Dart

`Stream` and `StreamBuilder` in Flutter