loadash sum code example
Example 1: lodash merge
import merge from 'lodash/merge'
let object = { 'a': [{ 'b': 2 }, { 'd': 4 }]};
let other = { 'a': [{ 'c': 3 }, { 'e': 5 }]};
merge(object, other); // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
Example 2: lodash map
const _quote_filter = _.map(quote_state, (val, key) => { if (val) { return key }})console.log(_quote_filter) //=> [ 'btc', undefined, undefined ]