Usefull Extensions 🔌

Generated by the Very Good CLI 🤖

A set of useful extensions and widgets for Flutter and Dart that I use regularly and that I have been collecting through the projects that I have been doing, StackOverflow questions, posts, etc...

Installing

Add usefull extensions package to your pubspec.yaml file:

dependencies:
  usefull_extensions:

Import the library into your .dart file:

import 'package:usefull_extensions/usefull_extensions.dart';

---

Extensions

usefull_extensions offers different extensions, for Objects, Widgets, Strings, etc...

Joined Widgets

This extension allows us to add a separator between each element of a List Usage: joinWithSeparator

[
 const Text('CARLOS'),
 const Text('MOBILE SOLUTIONS'),
].joinWithSeparator(); // You can also specify your own separator Widget
//.joinWithSeparator(const SizedBox(height: 10));

Spaced Widgets

This extension allows us to add a padding to a whole List, by default excludes flex Widgets, such as Expanded, Spacer or Flexible Usage: spaced

[
  const Text('CARLOS'),
  const Text('MOBILE SOLUTIONS'),
].spaced(); // You can also specify your own EdgeInsetsGeometry
//.spaced(padding: const EdgeInsets.all(10));

Log on Object

This extensions emits a log event of the current object, and returns the length of the output log Usage: log

final testString = 'My String';
testString.log();
// Outputs -> 'My String' as a log event

Unwrapped String on Object?

This extension allows us to safely unwrap a string, returning - by default if it's null Usage: unwrappedString

null.unwrappedString(); // '-'
null.unwrappedString('🍰'); // '🍰'
'My test'.unwrappedString('?'); // My test

Detailed Where on Map<K, V>

This set of extensions allows us to find an entry based on key, value, or both Usage: where, whereKey and whereValue

<String, int>{'John': 20, 'Mary': 21, 'Peter': 20}

..where((key, value) => key.length > 4 && value >= 20) // {Peter: 22}

..whereKey((key) => key.length < 5) // {John: 20, Mary: 21}

..whereValue((value) => value.isEven); // {John: 20, Peter: 22}

Capitalization on String

This extensions allows us to safely capitalize or title-case a String Usage: toCapitalized and toTitleCase

'carlos g'.toCapitalized(); // Carlos g
'carlos g'.toTitleCase(); // Carlos G

Widgets

usefull_extensions offers different Widgets

Spacer Widgets

A list of spacers, both vertically and horizontally Usage: VerticalSpacer, HorizontalSpacer and VerticalSpacerWithText

[
	// Vertical
    VerticalSpacer.xSmall(),
    VerticalSpacer.small(),
    VerticalSpacer.normal(),
    VerticalSpacer.semi(),
    VerticalSpacer.mediumSmall(),
    VerticalSpacer.medium(),
    VerticalSpacer.medium20(),
    VerticalSpacer.mediumLarge(),
    VerticalSpacer.large(),
    VerticalSpacer.xLarge(),
    VerticalSpacer.xxLarge(),
    VerticalSpacer.xxxLarge(),
    
	// Horizontal
    HorizontalSpacer.small(),
    HorizontalSpacer.normal(),
    HorizontalSpacer.semi(),
    HorizontalSpacer.mediumSmall(),
    HorizontalSpacer.medium(),
    HorizontalSpacer.medium20(),
    HorizontalSpacer.mediumLarge(),
    HorizontalSpacer.large(),
    HorizontalSpacer.xLarge(),
    HorizontalSpacer.xxLarge(),
    
	// Vertical with text
    VerticalSpacerWithText(text: 'example text'),
]

ThemeData on BuildContext

This extensions allows us to access a themedata based on the current context

final theme = context.theme; // Current ThemeData