Run results for: Function Wrapping

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36

Browser: Chrome 53

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
Direct Call	5708984.0 Ops/sec
Later Call	4670000.0 Ops/sec

Script Preparation code:

var n = 1000000
var arr = new Array(n)
for(var i = 0; i < n; i++){
  arr[i] = i
}

class Observer {
	constructor() {
    	this.value = 0
        this.completed = false
    }
  	next (val) {
     	this.value+=val
    }
  	complete () {
        this.completed = true
    }
}


class FromDirect {
  constructor (arr) {
    this.array = arr
  }
  sum (observer) {
  	for (var i = 0; i < this.array.length; ++i) {
      observer.next(this.array[i])
    }
    observer.complete()
  }
}

class FromLater {
  constructor (arr) {
    this.array = arr
  }
  sum (observer) {
  	for (var i = 0; i < this.array.length; ++i) {
      observer.next(this.array[i])
    }
    end()
    function end () {
      observer.complete()
    }
  }
}
var Ob0 = new Observer()
var Ob1 = new Observer()

Tests:

Direct Call
var t0 = new FromDirect(arr) t0.sum(Ob0)
Later Call
var t1 = new FromLater(arr) t1.sum(Ob1)

Run results for: Function Wrapping

Direct Call

Later Call