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@4poc
Last active October 27, 2016 15:59
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// immutable object assignment:
const initialState = { products: {} };
export default function reducer(state = initialState, action = {}) {
switch (action.type) {
case PUT_PRODUCT:
return { ...state, products: { ...state.products, [action.product.id]: action.product } };
default:
return state;
}
}
// immutable array insertion:
// action.number (number to insert), action.index (array index to insert at)
const initialState = { numbers: [] };
export default function reducer(state = initialState, action = {}) {
switch (action.type) {
case PUT_NUMBER:
return { ...state, numbers: [ ...state.numbers.slice(0, action.index),
action.number,
...state.numbers.slice(action.index + 1) ] };
default:
return state;
}
}
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