Benchmark: Array spread operator vs push in reduce 2

Tests:

spread operator
var arr = [ { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, ] arr.reduce((acc, findingInOpp) => [...acc, ...findingInOpp.findingList.map(({ findingId }) => findingId)],[])
Push
var arr = [ { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, { "opportunityId": 5943111, "findingList": [ {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, {"findingId": 6919 }, ], }, ] arr.reduce((acc, findingInOpp) => { acc.push(...findingInOpp.findingList.map(({ findingId }) => findingId)) return acc },[])

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
Push

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser/OS: Chrome 79 on Windows

View result in a separate tab

Test name	Executions per second
spread operator	101285.9 Ops/sec
Push	119573.0 Ops/sec

Array spread operator vs push in reduce 2 (version: 0)

Compare the new ES6 spread operator with push inside reduce

Comparing performance of: spread operator vs Push

Created: 4 years ago by: Guest

Jump to the latest result

spread operator

Push

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A