Benchmark: try/catch vs check

Script Preparation code:

function log() {
  var str = "";
  for (var i = 0; i < arguments.length; ++i) {
    str += String(arguments[i]);
  }
}

var resA;
function doTry (e) {
  try {
    resA = e.details[0];
  } catch (err) {
    log("unexpected format of event:", err.toString());
  }
}

var resB;
function doCheck (e) {
  if (e && e.details) {
    resB = e.details[0];
  } else {
    log("unexpected format of event:", e);
  }
}

var goodEvents = [];
for (var i = 0; i < 10000; ++i) {
  goodEvents.push({ details: [ Math.random() ] });
}

var badEvents = [];
for (var i = 0; i < 10000; ++i) {
  if (i % 20 === 0) {
    badEvents.push(null);
  } else if (i % 20 === 10) {
    badEvents.push({});
  } else {
  	badEvents.push({ details: [ Math.random() ] });
  }
}

function test (events, fn) {
  for (var i = 0; i < events.length; ++i) {
    fn(events[i]);
  }
}

Tests:

try
test(goodEvents, doTry);
check
test(goodEvents, doCheck);
try (bad)
test(badEvents, doTry);
check (bad)
test(badEvents, doCheck);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
try
check
try (bad)
check (bad)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.81 Safari/537.36

Browser/OS: Chrome 72 on Windows

View result in a separate tab

Test name	Executions per second
try	539.5 Ops/sec
check	454.5 Ops/sec
try (bad)	50.0 Ops/sec
check (bad)	257.2 Ops/sec

try/catch vs check (version: 0)

Comparing performance of: try vs check vs try (bad) vs check (bad)

Created: 7 years ago by: Guest

Jump to the latest result

try

check

try (bad)

check (bad)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A