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Run results for: lodash.head() vs [0]

Is head() needed only to check length !== 0 ? P.s. Empty testcase for [0] is useless because it won't crash on trying to get nonexistent element

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Chrome 67
Mac OS X 10.13.5
Desktop
5 years ago
Test name Executions per second
Not empty lodash.head() 4070026.0 Ops/sec
Not empty [0] 14671220.0 Ops/sec
Empty lodash.head() 4037851.0 Ops/sec
Empty [0] 14543500.0 Ops/sec
[0] with check 4267707.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Script Preparation code:
Tests:

  • Not empty lodash.head()

  • Not empty [0]

  • Empty lodash.head()

  • Empty [0]

  • [0] with check

  • [0] with null check