crizant

Action

Plain JavaScript objects to notify the store to change, or saga middlewares to execute operations.

e.g.:

{
  type: 'ADD_ITEM',
  item: {
    title: 'Hello World'

crizant

'use strict'

const aws = require('aws-sdk')
const parser = require('lambda-multipart-parser')

const accessTokenVerifier = require('./accessTokenVerifier')

const response = (statusCode, data) => ({
  statusCode,
  headers: {

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        if (someCondition == true)
          Text('The condition is true!'),
      ],
    );
  }

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        if (someCondition == true) ...[
          Text('Widget A'),
          Text('Widget B'),
          Text('Widget C'),
        ],

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        someCondition == true ?
          Text('The condition is true!'):
          Text('The condition is false!'),
      ],
    );

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      context: context,
      children: <Widget>[
        Conditional.single(
          conditionBuilder: (BuildContext context) => someCondition == true,
          widgetBuilder: (BuildContext context) => Text('The condition is true!'),
          fallbackBuilder: (BuildContext context) => Text('The condition is false!'),

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        ConditionalSwitch.single<String>(
          context: context,
          valueBuilder: (BuildContext context) => 'A',
          caseBuilders: {
            'A': (BuildContext context) => Text('The value is A!'),

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: Conditional.list(
        context: context,
        conditionBuilder: (BuildContext context) => someCondition == true,
        widgetBuilder: (BuildContext context) => <Widget>[
          Text('Widget A'),
          Text('Widget B'),

crizant

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: ConditionalSwitch.list<String>(
        context: context,
        valueBuilder: (BuildContext context) => 'A',
        caseBuilders: {
          'A': (BuildContext context) => <Widget>[
            Text('Widget A'),

crizant

// Bad
class MyWidget extends StatelessWidget {
  final List<int> numbers = [];
  
  @override
  Widget build(BuildContext context) {
    // These lines only related to the condition,
    // but they are at the topmost scope of the `build` function.
    final int firstEvenNumber = numbers.firstWhere(
      (element) => element % 2 == 0,