Skip to content

AristideVB/flutter-tips-and-tricks

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

Table of Contents

Cherry Picking Functions in Dart

Source Code

Integer Range extension in Dart

Source Code

Static vs Factory Constructors in Dart

Source Code

Result Type in Dart

Source Code

StreamController Sink in Flutter

Video Demo

Source Code

Enum Members in Dart 2.17

Source Code

Constructor vs Factory Constructor in Dart

Source Code

Unwrapping Streams in Dart

Source Code

Appending to Iterable<T> in Dart

Source Code

Inline Synchronous Generators in Dart

Source Code

Functions as First Class Citizens in Flutter

Source Code

+ Operator on Map in Dart

Source Code

Stream Drain in Flutter

Source Code

Reusable Separators in Flutter

Source Code

AsyncSnapshotBuilder in Flutter

Source Code

Default Parameter Values in Dart

Source Code

Clipboard in Flutter

Source Code

Generic Object Map in Dart

Source Code

RequireData in AsyncSnapshot in Flutter

Source Code

Symbol in Dart

Source Code

RadioListTile in Flutter

Source Code

Infinite ListView in Flutter

Video Demo

Source Code

FilterChip in Flutter

Video Demo

Source Code

Function Pointers in Flutter

Source Code

Multi-field Object Comparison in Dart

Source Code

Expectation Extensions in Flutter

Source Code

Delay Extension in Flutter

Source Code

Hide Keyword in Dart

Source Code

Firebase Batch Operations in Flutter

Source Code

Show Keyword in Dart

Source Code

Cherry Pick Provider Changes in Flutter

Source Code

URL Data in Dart

Source Code

Observe Network Connection in Flutter

Source Code

Restartable Timer in Dart

Source Code

LazyStream in Flutter and Dart

Source Code

Cancelable APIs in Flutter

Source Code

Asset Data in Flutter

Source Code

API Caching in Flutter

Source Code

FutureGroup in Dart

Source Code

Flatten Iterable<bool> in Dart

Source Code

Caching Temp Files in Flutter

Source Code

Custom Lists in Dart

Source Code

Optional Chaining in Dart

Source Code

MapList in Flutter

Source Code

Future<bool> in Flutter

Source Code

Async Bloc Init in Flutter

Source Code

Firebase Auth Errors in Flutter

Source Code

Debug Strings in Flutter

Source Code

Keyboard Appearance in Flutter

Source Code

Get String Data in Dart

Source Code

Stream.startWith in Flutter

Source Code

Optional Functions in Dart

Source Code

AnnotatedRegion in Flutter

Source Code

Unordered Map Equality in Dart

Source Code

Iterable to ListView in Flutter

Source Code

Password Mask in Flutter

Video Demo

Source Code

Fast Object.toString() in Dart

Source Code

Copying Bloc State in Flutter

Source Code

Iterable Subscripts in Dart

Source Code

useState in Flutter Hooks

Video Demo

Source Code

Folding Iterables in Dart

Source Code

Custom Iterables in Dart

Source Code

Class Clusters in Dart

Source Code

Iterable +/- in Dart

Source Code

Periodic Streams in Dart

Source Code

EmptyOnError in Dart

Source Code

Stream<T> Initial Value in Flutter

Video Demo

Source Code

Double.normalize in Dart

Source Code

Hide Sensitive Information in Flutter

Video Demo

Source Code

Iterable.compactMap in Dart

Source Code

useEffect in Flutter Hooks

Source Code

Merging Streams in Dart

Source Code

Isolate Stream in Dart

Source Code

Network Image Retry in Flutter

Source Code

Reusable APIs in Flutter

Source Code

ListTile Shadow in Flutter

Source Code

Transparent AppBar in Flutter

Source Code

Constructors on Abstract Classes in Dart

Source Code

@useResult in Dart

Source Code

@mustCallSuper in Dart

Source Code

Object.hash in Dart

Source Code

Expanded Equally in Flutter

Source Code

Random Iterable Value in Dart

Video Demo

Source Code

Hardcoded Strings in Flutter

Source Code

Manually Scroll in List View in Flutter

Video Demo

Source Code

AsyncSnapshot to Widget in Flutter

Source Code

Breadcrumbs in Flutter

Video Demo

Source Code

Unique Map Values in Dart

Source Code

Smart Quotes/Dashes in Flutter

Source Code

Haptic Feedback in Flutter

Video Demo

Source Code

Localization Delegates in Flutter

Source Code

Extending Functions in Dart

Source Code

Paginated ListView in Flutter

Video Demo

Source Code

Immutable Classes in Dart

Source Code

Card Widget in Flutter

Source Code

List Equality Ignoring Ordering in Dart

Source Code

Shorten GitHub URLs in Dart

Source Code

Time Picker in Flutter

Video Demo

Source Code

Throttled Print in Flutter

Source Code

Map Equality in Dart

Source Code

Unique Maps in Dart

Source Code

Raw Auto Complete in Flutter

Video Demo

Source Code

Title on Object in Dart

Source Code

Compute in Flutter

Source Code

Filter on Map in Dart

Source Code

Type Alias in Dart

Source Code

ValueNotifier in Flutter

Source Code

Object to Integer in Dart

Source Code

Image Opacity in Flutter

Video Demo

Source Code

Covariant in Dart

Source Code

Custom Errors in Streams in Dart

Source Code

Shake Animation in Flutter

Video Demo

Source Code

Throw Enums in Dart

Source Code

Future Error Test in Flutter

Source Code

Generic URL Retrieval in Dart

Source Code

Custom Error Widget in Flutter

Source Code

Handle Multiple Future Errors in Dart

Source Code

Future Error Handling in Dart

Source Code

String to Toast in Flutter

Video Demo

Source Code

Waiting in Dart

Source Code

Loading Dialog in Flutter

Video Demo

Source Code

Compact Map on Map<K,V> in Dart

Source Code

Query Parameters in Dart

Source Code

Multiple Gradients in Container in Flutter

Source Code

Filter on Stream<List<T>> in Dart

Source Code

Generic Route Arguments in Flutter

Source Code

Generic Dialog in Flutter

Source Code

GitHub API in Flutter

Video Demo

Source Code

ChangeNotifier in Flutter

Video Demo

Source Code

Refresh Indicator in Flutter

Video Demo

Source Code

FlatMap in Dart

Source Code

OrientationBuilder in Flutter

Video Demo

Source Code

Linear Gradient in Flutter

Source Code

Bloc Text Editing Controller in Flutter

Video Demo

Soure Code

Blurred TabBar in Flutter

Video Demo

Source Code

Play YouTube in Flutter

Video Demo

Source Code

ListView Background in Flutter

Video Demo

Source Code

Integer to Binary in Dart

Source Code

Split String by Length in Dart

Source Code

Image Tint in Flutter

Video Demo

Source Code

SlideTransition in Flutter

Video Demo

Source Code

Expansion Panels and Lists in Flutter

Video Demo

Source Code

Complete CRUD App in Flutter

Video Demo

Source Code

SQLite Storage in Flutter

Video Demo

Source Code

Circular Progress with Percentage in Flutter

Video Demo

Source Code

Opening URLs in Flutter

Source Code

Commodore 64 Screen in Flutter

Video Demo

Source Code

Animated Lists in Flutter

Video Demo

Source Code

CheckboxListTile in Flutter

Source Code

- Operator on String in Dart

Source Code

Dart Progress for Future<T>

Source Code

Move Widget Shadows with Animation

Source Code

Gallery with Blurred Backgrounds in Flutter

Source Code

Custom Path Clippers in Flutter

Source Code

Frost Effect on Images in Flutter

Source Code

Custom Clippers in Flutter

Source Code

Check if Website is Up or Down in Dart

Source Code

Section Titles on ListView in Flutter

Source Code

Circular Progress in Flutter

Source Code

Displaying Scroll Wheels in Flutter

Source Code

Post Messages to Slack with Dart

Source Code

Unwrap List<T?>? in Dart

Source Code

Avoiding UI Jitters When Switching Widgets in Flutter

Source Code

Detect Redirects in Dart

Source Code

Proportional Constraints in Flutter

Source Code

Displaying Cupertino Action Sheets in Flutter

Source Code

Rotating List<T> in Dart

Source Code

Displaying SnackBars in Flutter

Source Code

Custom Tab Bar Using ToggleButtons in Flutter

Source Code

Hashable Mixins in Dart

Source Code

Flutter Tips and Tricks in Terminal

Source Code

Searching List<List<T>> in Dart

Source Code

Cloning Objects in Dart

Source Code

Color Filters in Flutter

Source Code

Flattening Lists in Dart

Source Code

Managing Duplicates in List<T> in Dart

Source Code

FlatMap and CompactMap in Dart

Source Code

Equality of List<T> in Dart

Source Code

Constants in Dart

Source Code

Displaying Scrollable Bottom Sheets in Flutter

Source Code

YouTube Ad Remover in Dart

Source Code

Fade Between Widgets in Flutter

Source Code

Sort Descriptors in Dart

Source Code

User Sortable Columns and Tables in Flutter

Source Code

Content-Length of List<Uri> in Dart

Source Code

Recursive Dot Notation on Maps in Dart

Source Code

Allow User Selection of Text in Flutter

Source Code

Placing Constraints on Widgets in Flutter

Source Code

Animating Position Changes in Flutter

Source Code

Transitioning Between Widgets in Flutter

Source Code

Doubly Linked Lists in Dart

Source Code

Reordering Items Inside List Views in Flutter

Source Code

Custom Stream Transformers in Dart

Source Code

Expanding Stream Elements in Dart

Source Code

Consume Streams for a Duration in Dart

Source Code

Shortening URLs in Dart

Source Code

LimitedBox Widget as ListView Items in Flutter

Source Code

Generically Convert Anything to Int in Dart

Source Code

Validating URL Certificates in Dart

Source Code

Displaying Popup Menus in Flutter

Source Code

Implementing Drag and Drop in Flutter

Source Code

Dismissing List Items in Flutter

Source Code

Animating Widgets with Ease in Flutter

Source Code

Displaying Tool Tips in Flutter

Source Code

Displaying Assorted Widgets Inside TableView in Flutter

Source Code

Page Indicator with Page View in Flutter

Source Code

Animating and Moving a Floating Action Button in Flutter

Source Code

Fading Network Image Widget in Flutter

Source Code

Transparent Alert Dialogs in Flutter

Source Code

Network Image Size in Dart

Source Code

Animated Icons in Flutter

Source Code

Custom Scroll Views in Flutter

Source Code

Parallax App Bar in Flutter

JSON HTTP Requests in Dart

URL Timeouts in Dart

Detecting URL File Types in Dart

Paginated Lists in Dart

Requesting DELETE on APIs in Dart

Animated Containers in Flutter

Hiding Widgets in Flutter

Simple Opacity Animation in Flutter

Vignette Widget in Flutter

Drop Down Button Configuration and Usage in Flutter

Expandable List Items in Flutter

Infinite Scrolling in Flutter

Infinite Arrays in Dart

Custom Color Picker Component in Flutter

Displaying and Reacting to Switches in Flutter

Displaying Bottom Bars in Flutter

Displaying Buttons on AppBar in Flutter

Displaying Bottom Sheets in Flutter

Converting Enums to Radio Buttons in Flutter

Check Existence of Websites in Flutter

Images inside AlertDialog in Flutter

Returning Values from AlertDialog in Flutter

Simple Grid View in Flutter

Rendering Bullet Points in Flutter

Retrying Futures in Flutter

Containers as ClipOvals in Flutter

Rich Texts in Flutter

Wrapping Widgets in Flutter

Sweep Gradients in Flutter

Stream and StreamBuilder in Flutter

Blur Effect in Flutter

Convert Enums to Strings in Dart

Replacing Text in TextField in Flutter

Aspect Ratio in Flutter

Zoom and Pan in Flutter

Resizing Images in Flutter to Fit Screen Height

Validating URLs in Flutter

FrameBuilder for Network Images in Flutter

Adding Shadow to Icons in Flutter

Calculating Median of Lists in Dart

Generic Functions with Reduce in Dart

Passing Back Data From a Screen to the Previous One in Flutter

Flinging an Animation in Flutter

Fade Animations in Flutter

Throttling User Input in Flutter

Censoring TextFields in Flutter

Customizing TextButton in Flutter

Multiline TextFields in Flutter

Filtering TextField Input in Flutter

Focusing Manually on TextFields in Flutter

Data Streams Over HTTP/HTTPs in Dart

Catching Nonexistent Accessors or Methods in Dart

Using Expando in Dart

Implementing Custom Maps in Dart

Dynamically Calling Functions in Dart

Factory Constructors in Dart

Calculating the Sum of List Items in Dart

Removing Duplicate Strings in Lists in Dart (Case-Insensitive)

Implementing Range in Dart

Converting Lists to Maps in Dart

Implementing Hashable in Dart

Random Name Generator in Dart

Capturing Stack Traces in Dart Exceptions

Removing Duplicates from Lists in Dart

Optional Spread Operator in Dart

Calling Optional Functions in Dart

Odd-Even Sort in Dart

Implementing Zip and Tuples in Dart

Swapping Values in Lists with XOR in Dart

Waiting for Multiple Futures in Dart

Using Queues as Stacks in Dart

Custom Iterators in Dart

Iterables as Ranges and Transform in Dart

Errors vs Exceptions in Dart

Custom Annotations in Dart

Classes as Enums in Dart

Spread Operator in Collection Literals in Dart

StreamBuilder and StreamController in Dart

Almost Equal in Dart

Enum Associated Values in Dart

Implementing Comparable in Dart

Implementing Custom Integer Types in Dart

Custom Subscripts in Dart

Dart List Enumeration with Index

Applying Mixins to Other Mixins in Dart

Parameter Types in Dart

Custom Exceptions in Dart

rethrowing Exceptions in Dart

mixins and JSON Parsing in Dart

mixins vs abstract classes in Dart

Drawing Shapes in Flutter with LayoutBuilder, CustomPaint and CustomPainter

Generic Type Aliases in Dart

Callable Classes in Dart

Synchronous Generators in Dart

Implicit Interfaces in Dart

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

About

A Collection of Flutter and Dart Tips and Tricks

Resources

Stars

Watchers

Forks

Packages

No packages published

Languages

  • Dart 100.0%