typescript sum all array values
const sum = receiptItems.reduce((sum, current) => sum + current.total, 0);typescript sum all array values
const sum = receiptItems.reduce((sum, current) => sum + current.total, 0);how to count duplicates in an array javascript
arr.reduce((b,c)=>((b[b.findIndex(d=>d.el===c)]||b[b.push({el:c,count:0})-1]).count++,b),[]);Copyright © 2021 Codeinu
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