mzaks’s gists

mzaks / APL.swift

Created February 11, 2016 15:48

Subset of APL written in Swift

	//: Playground - noun: a place where people can play

	import Foundation

	var str = "Hello, playground"

	func check(p1 : [Double], _ p2 : [Double]) {
	assert(p1.count == p2.count, "Vectors are of different size")
	}

mzaks / NameIndex.cs

Last active September 20, 2018 16:20

Example of an index in Entitas-CSharp

	class NameIndex {

	Group observedCollection;
	Dictionary<string, Entity> lookup = new Dictionary<string, Entity>();

	public NameIndex(Pool pool){
	observedCollection = pool.GetGroup(Matcher.Name);

	observedCollection.OnEntityAdded += AddEntity;
	observedCollection.OnEntityRemoved += RemoveEntity;

mzaks / ActyxChalange.swift

Last active April 27, 2016 18:10

	import Foundation

	var machines : [NSURL] = []
	var numberOfTicks = 0

	let loadingQueues = [ // 4 cores -> 4 queues, more cores -> add more queues
	dispatch_queue_create("loadingQueue1", nil),
	dispatch_queue_create("loadingQueue2", nil),
	dispatch_queue_create("loadingQueue3", nil),
	dispatch_queue_create("loadingQueue4", nil),

mzaks / ArrayWitRepeatedValue.swift

Last active April 28, 2016 10:26

Difference between Value and Reference type

	struct Person1 {
	var name : String?
	}

	class Person2 {
	var name : String?
	}


	var people1 = Array.init(count: 10, repeatedValue: Person1())

mzaks / benchamark.json

Created May 15, 2016 21:53

FlatBuffers Benchmark data as JSON

	{
	"location":"http://google.com/flatbuffers/",
	"initialized":true,
	"fruit":"Bananas",
	"list":[
	{
	"sibling":{
	"parent":{
	"i_d":0xABADCAFE,
	"count":10000,

mzaks / benchamark.json

Last active May 15, 2016 21:53

FlatBuffers Benchmark data as JSON

	{
	"location":"http://google.com/flatbuffers/",
	"initialized":true,
	"fruit":"Bananas",
	"list":[
	{
	"sibling":{
	"parent":{
	"i_d":0xABADCAFE,
	"count":10000,

mzaks / bench_functions.swift

Created May 15, 2016 22:27

Decoding FlatBuffers with bare functions

	private func fromByteArray<T : Scalar>(buffer : UnsafePointer<UInt8>, _ position : Int) -> T{
	return UnsafePointer<T>(buffer.advancedBy(position)).memory
	}

	private func getPropertyOffset(buffer : UnsafePointer<UInt8>, _ objectOffset : Offset, propertyIndex : Int)->Int {
	let offset = Int(objectOffset)
	let localOffset : Int32 = fromByteArray(buffer, offset)
	let vTableOffset : Int = offset - Int(localOffset)
	let vTableLength : Int16 = fromByteArray(buffer, vTableOffset)
	if(vTableLength<=Int16(4 + propertyIndex * 2)) {

mzaks / bench_structs.swift

Created May 15, 2016 22:38

Decoding FlatBuffers with struct API

	struct FooBarStruct {
	var buffer : UnsafePointer<UInt8> = nil
	var myOffset : Offset = 0
	var name: UnsafeBufferPointer<UInt8> { get { return getStringBuffer(buffer, getOffset(buffer, myOffset, propertyIndex: 1))! } }
	var rating: Float64 { get { return get(buffer, myOffset, propertyIndex: 2)! } }
	var postfix: UInt8 { get { return get(buffer, myOffset, propertyIndex: 3)! } }
	var sibling: Bar { get { return get(buffer, myOffset, propertyIndex: 0)! } }
	}

	struct FooBarContainerStruct {

mzaks / updated_run_bench.swift

Created May 17, 2016 13:53

Updated the run bench to have 3 distinct total counters for different type of decode+traverse+dealloc

	func runbench(lazyrun: BooleanType)
	{
	var encode = 0.0
	var decode = 0.0
	var direct = 0.0
	var use = 0.0
	var dealloc = 0.0
	var withStruct = 0.0
	var total:UInt64 = 0
	var total1:UInt64 = 0

mzaks / updated_run_bench2.swift

Created May 17, 2016 15:10

Passing in start to the benchmark function

	let time11 = CFAbsoluteTimeGetCurrent()
	for i in 0..<iterations {
	let result = flatuseStruct(outputData, start:i)
	assert(result == 8644311666 + Int(i))
	total2 = total2 + UInt64(result)
	}
	let time12 = CFAbsoluteTimeGetCurrent()

	func flatuseStruct(buffer : UnsafePointer<UInt8>, start : UInt) -> Int
	{

Maxim Zaks mzaks