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map-reducer
Advanced tools
For every state object implements #map
such as Array
, mapReducer(reduce)
creates a new reducer that reduces for each item using #map
. Not related to MapReduce!
var mapReducer = require('map-reducer');
// reducer for any number state
function reduce(state, action) {
switch(action.type) {
case 'ADD':
return state + action.val;
case 'MUL':
return state * action.val;
default:
return state;
}
}
console.log(reduce(3, { type: 'ADD', val: 4 })); // => 7
// create item reducer
var reduceItems = mapReducer(reduce);
// ..then
var items = [1, 3, 5];
console.log(reduceItems(items, { type: 'MUL', val: 4 })); // => [4, 12, 20]
FAQs
Maps Redux reducer into #map-able state
We found that map-reducer demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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