Misnik ht 3 #46
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Misnik ht 3 #46
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koretskiyav
reviewed
Dec 10, 2021
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| function Basket ({ restaurants, orderMap, amount }) { | ||
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| const menu = restaurants.map((item) => item.menu).reduce((previousValue, currentValue) => previousValue.concat(currentValue)) |
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это вычисление лучше мемоизировать
koretskiyav
reviewed
Dec 10, 2021
| const newOrderMap = orderMap; | ||
| let allSum = 0; | ||
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| const products = Object.entries(newOrderMap).filter(item => item[1] > 0).map((item) => { |
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и в целом все эти вычисления можно вынести в mapStateToProps
koretskiyav
reviewed
Dec 10, 2021
| deleteItem: () => dispatch(deleteItem(props.id)) | ||
| }) | ||
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| export default connect(mapStateToProps, mapDispatchToProps)(BasketItem) |
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если mapStateToProps не нужен, то можно null передать
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