vector.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import Pkg; Pkg.add(\"BenchmarkTools\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "dist (generic function with 2 methods)"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "mutable struct Vector\n",
    "    x::Float32\n",
    "    y::Float32\n",
    "end\n",
    "\n",
    "l2norm(v::Vector) = sqrt(v.x^2 + v.y^2)\n",
    "dist(v1::Vector, v2::Vector) = l2norm(Vector(v1.x - v2.x, v1.y - v2.y))\n",
    "\n",
    "l2norm(v::Array{Float32}) = sqrt(v[1]^2 + v[2]^2)\n",
    "dist(v1::Array{Float32}, v2::Array{Float32}) = l2norm([v1[1] - v2[1], v1[2] - v2[2]])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "BenchmarkTools.Trial: \n",
       "  memory estimate:  2.75 MiB\n",
       "  allocs estimate:  30000\n",
       "  --------------\n",
       "  minimum time:     1.203 ms (0.00% GC)\n",
       "  median time:      1.244 ms (0.00% GC)\n",
       "  mean time:        1.436 ms (11.91% GC)\n",
       "  maximum time:     5.245 ms (51.63% GC)\n",
       "  --------------\n",
       "  samples:          3480\n",
       "  evals/sample:     1"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "using BenchmarkTools\n",
    "\n",
    "function vectorloop(max)\n",
    "    for i = 1:max\n",
    "        v1 = Vector(rand() * 100, rand() * 100)\n",
    "        v2 = Vector(rand() * 100, rand() * 100)\n",
    "        dist(v1, v2)\n",
    "    end\n",
    "end\n",
    "\n",
    "@benchmark arrayloop(10000)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "BenchmarkTools.Trial: \n",
       "  memory estimate:  2.75 MiB\n",
       "  allocs estimate:  30000\n",
       "  --------------\n",
       "  minimum time:     1.211 ms (0.00% GC)\n",
       "  median time:      1.243 ms (0.00% GC)\n",
       "  mean time:        1.438 ms (12.18% GC)\n",
       "  maximum time:     5.746 ms (60.34% GC)\n",
       "  --------------\n",
       "  samples:          3477\n",
       "  evals/sample:     1"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "using BenchmarkTools\n",
    "\n",
    "function arrayloop(max)\n",
    "    for i = 1:max\n",
    "        v1 = [Float32(rand() * 100), Float32(rand() * 100)]\n",
    "        v2 = [Float32(rand() * 100), Float32(rand() * 100)]\n",
    "        dist(v1, v2)\n",
    "    end\n",
    "end\n",
    "\n",
    "@benchmark arrayloop(10000)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Julia 1.5.1",
   "language": "julia",
   "name": "julia-1.5"
  },
  "language_info": {
   "file_extension": ".jl",
   "mimetype": "application/julia",
   "name": "julia",
   "version": "1.5.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}