Benchmark: Map .has() vs .get()

Script Preparation code:

function noop() {}
map = new Map();
keys = [];

for (let i = 0; i < 10000; i++) {
  const k = new Number(i);
  keys.push(k);
  if (k % 2 !== 0) map.set(k, i);
}

Tests:

.has() and .get()
keys.forEach(k => { if (map.has(k)) noop(map.get(k)); })
.get() only
keys.forEach(k => { const v = map.get(k); if (v) noop(v); })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
.has() and .get()
.get() only

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0

Browser/OS: Firefox 98 on Ubuntu

View result in a separate tab

Test name	Executions per second
.has() and .get()	1672.5 Ops/sec
.get() only	1824.1 Ops/sec

Map .has() vs .get() (version: 3)

This is to compare the cost of this pattern ```if (map.has(key)) func1(map.get(key))``` v/s ```const v = map.get(key); if (v) func1(v);```

Comparing performance of: .has() and .get() vs .get() only

Created: 5 years ago by: Registered User

Jump to the latest result

.has() and .get()

.get() only

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A