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joaomilho/calculatorReducer.js

Created June 3, 2016 23:16
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A calculatorReducer in JS
Raw
calculatorReducer.js
const calculatorReducer = (state, { type, payload }) {
switch (type) {
case 'add':
return state + payload
case 'subtract':
return state - payload
case 'multiply':
return state * payload
case 'divide':
return state / payload
default:
return state
}
}
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