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try Undux but...
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tt
September 19, 2018
Programming
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280
try Undux but...
I tryed Undux of state management but Redux is better that.
tt
September 19, 2018
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Transcript
ReduxʹർΕͨͷͰ UnduxΛૉৼΓͯ͠Έͨ Osaka Mix Leap Study #23 React Nativeษڧձ @tatsushitoji
Who am I ? • @tatsushitoji • σβΠϯࣄॴɺήʔϜձࣾɺweb੍࡞ձ ࣾɺۙͰιʔγϟϧϩάΠϯͳͲΛఏڙ ͢ΔࣄۀձࣾΛܦͯɺݱࡏɺwebࣄۀҎ֎
ͷۀछΛபͱͨ͠ձࣾͰwebࣄۀͷ্ཱͪ͛ Λߦ͍ͬͯ·͢
Dead simple state management for React
storeΛ࡞ import { createConnectedStore } from 'undux' import { initialCounterState
} from './modules/counter' export const store = createConnectedStore({ ...initialCounterState, }) import { createStore, combineReducers } from 'redux' import { counterReducer } from ‘./modules/counter' export const store = createStore( combineReducers({ counter: counterReducer, }), ) 6OEVY 3FEVY
ContainerͰϥοϓ͢Δ import Store from './store' import { Counter } from
'./components/counter' import registerServiceWorker from './registerServiceWorker' ReactDOM.render( <Store.Container> <Counter /> </Store.Container>, document.getElementById('root') import { store } from './store' import { Container as Counter } from './containers/counter' ReactDOM.render( <Provider store={store}> <Counter /> </Provider>, document.getElementById('root') ) 6OEVY 3FEVY
connect͢Δ import * as React from 'react' import { withStore
} from '../../store' export const Counter = withStore(({ store }) => ( <> … </> )) import { connect } from 'react-redux' import { Counter } from '../../components/counter' export const Container = connect(state => state)(Counter) 6OEVY 3FEVY
Dead Simple ! import * as React from 'react' import
{ withStore } from '../../store' export const Counter = withStore(({ store }) => ( <div> <p>count: {store.get('countValue')}</p> <button onClick={() => store.set('countValue')(store.get('countValue') + 1)}>Increment</button> <button onClick={() => store.set('countValue')(store.get('countValue') - 1)}>Decrement</button> <button onClick={() => store.set('countValue')(0)}>Reset</button> </div> ))
͔ͨ͠ʹγϯϓϧ͕ͩεέʔϧ ͢Δ…ʁ • storeΛ·Δ͝ͱίϯϙʔωϯτʹͭͬ͜Ήͱ ͍͏உؾ͋;ΕΔେͳઃܭ • view ଆ(presentational Component)ʹ͕ ৭ʑͱͬͯ͘Δ
ͬͯΈͨ • storeUpdaterͷ • Store Λඞཁͳ͚ͩϚοϐϯά
ຐվ… export const Counter = compose( withStore, withHandlers({ onIncrement: ({
store }) => () => store.set('countValue')(store.get('countValue') + 1), onDecrement: ({ store }) => () => store.set('countValue')(store.get('countValue') - 1), onReset: ({ store }) => () => store.set('countValue')(0), }), mapProps(({ store, onIncrement, onReset, onDecrement }) => ({ onIncrement, onDecrement, onReset, countValue: store.get('countValue'), })), )(Component)
• mapProps Ͱ react-redux ͷ mapStateToProps ʹ͍ۙ͜ͱΛ͍ͬͯΔ • WithHandlers Ͱ
react-redux ͷ mapDispatchToProps ʹ͍ۙ͜ͱΛ͍ͬͯΔ • ܕͭΒ͍ • Redux ͍͍͑ͷͰ…ʁ
ReduxʹർΕͨͷͰ UnduxΛૉৼΓͯ͠Έͨ…
݁Ռɺ ෳਓ։ൃɺ·ͨ͋ΔఔنҎ্ ͕ఆ͞ΕΔΞϓϦέʔγϣϯͷঢ়ଶ ཧʹ͓͍ͯ Redux ͷ store ͷ mutaion ͷઃܭͱ
react-redux ͷ connect ڞ௨ೝࣝͱ͍ͯ࣋ͪ͢͠ ͠ɺducks ͳσΟϨΫτϦߏʹ͢Ε ϑΝΠϧҠಈͷΦʔόʔϔου͑ ΒΕΔ͠… ͦͦɺReduxʹർΕͯͳͲ͍ͳ͍
ϦϙδτϦ • https://github.com/tatsushitoji/cra-redux • https://github.com/tatsushitoji/cra-undux ※ feat/optimize-connect ϒϥϯνͰ͋Δఔ·Ͱͷ࠷దԽΛ͍ͬͯ·͢
͝ਗ਼ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠