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Olena Sovyn (@frontendgirl) 6OEFSTUBOEJOH 3FDPNQPTFUISPVHI FYBNQMFT

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Olena Sovyn (@frontendgirl) ! & "

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❤ 3FBDU
 3FEVY -PEBTI 3FBDU4UPSZCPPL GVODUJPOBMQSPHSBNNJOH

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Olena Sovyn (@frontendgirl) 6OEFSTUBOEJOH 3FDPNQPTFUISPVHI FYBNQMFT

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Image source: https://szenandoah.deviantart.com/art/Wonderland-Logo-252210579

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ZFBSBHP

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How to make complex component to be reusable

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%BUB #FIBWJPVS 6* Reusable ???

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)0$ (high order components)

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)0$ changed: context or/and props

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3FDPNQPTF

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%BUB #FIBWJPVS 6* Recompose HOC Stateless component

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Why should I care about Recompose

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Image source: http://spacenews.com/spacexs-new-price-chart-illustrates-performance-cost-of-reusability/

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Image source: https://whataboutjesus.com/jesus-is-the-only-way/

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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%VOOJOHr,SVHFSFGGFDU Confidence Wisdom first usage of one of Recompose HOCs reading Recompose
 documentation trying to use Recompose on practice

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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branch lifecycle renderComponent renderNothing toClass mapProps withProps withPropsOnChange defaultProps renameProp renameProps flattenProp withState withHandlers withStateHandlers withReducer shouldUpdate pure onlyUpdateForKeys onlyUpdateForPropTypes withContext getContext 1SPQT 4UBUF 1FSGPSNBODF 0UIFS $POUFYU 3FDPNQPTF
 )0$T

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branch lifecycle renderComponent renderNothing toClass mapProps withProps withPropsOnChange defaultProps renameProp renameProps flattenProp withState withHandlers withStateHandlers withReducer shouldUpdate pure onlyUpdateForKeys onlyUpdateForPropTypes withContext getContext 1SPQT 4UBUF 1FSGPSNBODF 0UIFS $POUFYU 3FDPNQPTF
 )0$T

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https://www.youtube.com/watch?v=C_yj4k4QZVI

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3FVTBCJMJUZ

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MJGFDZDMF Image source: https://www.codevoila.com/post/57/reactjs-tutorial-react-component-lifecycle

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UJNF &YBNQMFT

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setDisplayName toClass lifecycle getContext withContext onlyUpdateForPropTypes onlyUpdateForKeys setStatic setPropTypes componentFromStream setObservableConfig createEventHandlerWithConfig createEventHandler mapPropsStreamWithConfig mapPropsStream componentFromStreamWithConfig compose isClassComponent getDisplayName wrapDisplayName shallowEqual createSink componentFromProp nest hoistStatics mapProps withProps withHandlers withPropsOnChange renameProps defaultProps renameProp withState renderComponent renderNothing withReducer withStateHandlers shouldUpdate pure branch flattenProp

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Any takeaways

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Even if you are not directly contributing to libraries you have still a lot to share 

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"XFTPNF 3FDPNQPTF

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Make ideas clearly stand out in your examples, no matter how complex they are 

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Useful Example Complex example Simple example

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Even if something wasn’t clear from the first time there is always another way 

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%KBOHP(JSMT,ZJW

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Image source: https://hacks.mozilla.org/2017/11/entering-the-quantum-era-how-firefox-got-fast-again-and-where-its-going-to-get-faster/ -JO$MBSLXPSLT

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Image source: https://twitter.com/kosamari/status/859958929484337152 $PEFEPPEMFTCZ.BSJLP,PTBLB

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Code Example Input Output

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Even if something wasn’t clear from the first time there is always another way