CODEWITHSUNDEEP
javascriptnode.jsv8
Benjamin Kiefer
Benjamin Kiefer

Reputation: 25

Function call optimization in V8

Does V8 optimize multiple function calls that are the same function and arguments? In the example below Variance is called twice with the same arguments.

var Variance = require('variance');

function summary(items) {        
    return {
      variance: Variance(items.value.map((item) => item.value)),
      standardDeviation: Math.sqrt(Variance(items.value.map((item) => item.value))),
    };
}

Upvotes: 0

Views: 401

Answers (1)

mscdex
mscdex

Reputation: 106698

v8 does optimize functions called repeatedly with the same arguments, but in your example those are not actually the same arguments (they are different object/array references).

Upvotes: 2

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