personal memoize test

JavaScript performance comparison

Test case created by Graeme Y

Preparation code

<script src="https://dl.dropboxusercontent.com/u/5593951/Releases/functional.js">
</script>

<script>
testnames=[];
for(var i = 0; i<50; i++){testnames.push(makeid())}

function randomName() { return testnames[Math.floor(Math.random()*testnames.length)] }

Functional.install();

var item = function(array, index) {
    return array[index]
  }.autoCurry();
var charCodeAt = function(pos, str) {return str.charCodeAt(pos)}.autoCurry(),
  join = function(token, xs) {
    return xs.join(token);
  }.autoCurry()


  var lowerTable = [ /* x00-x07 */ '\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07', /* x08-x0f */ '\x08', '\x09', '\x0a', '\x0b', '\x0c', '\x0d', '\x0e', '\x0f', /* x10-x17 */ '\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17', /* x18-x1f */ '\x18', '\x19', '\x1a', '\x1b', '\x1c', '\x1d', '\x1e', '\x1f', /* ' '-x27 */ ' ', '!', '"', '#', '$', '%', '&', '\x27', /* '('-'/' */ '(', ')', '*', '+', ',', '-', '.', '/', /* '0'-'7' */ '0', '1', '2', '3', '4', '5', '6', '7', /* '8'-'?' */ '8', '9', ':', ';', '<', '=', '>', '?', /* '@'-'G' */ '@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', /* 'H'-'O' */ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', /* 'P'-'W' */ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', /* 'X'-'_' */ 'x', 'y', 'z', '{', '|', '}', '~', '_', /* '`'-'g' */ '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', /* 'h'-'o' */ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', /* 'p'-'w' */ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', /* 'x'-x7f */ 'x', 'y', 'z', '{', '|', '}', '~', '\x7f', /* x80-x87 */ '\x80', '\x81', '\x82', '\x83', '\x84', '\x85', '\x86', '\x87', /* x88-x8f */ '\x88', '\x89', '\x8a', '\x8b', '\x8c', '\x8d', '\x8e', '\x8f', /* x90-x97 */ '\x90', '\x91', '\x92', '\x93', '\x94', '\x95', '\x96', '\x97', /* x98-x9f */ '\x98', '\x99', '\x9a', '\x9b', '\x9c', '\x9d', '\x9e', '\x9f', /* xa0-xa7 */ '\xa0', '\xa1', '\xa2', '\xa3', '\xa4', '\xa5', '\xa6', '\xa7', /* xa8-xaf */ '\xa8', '\xa9', '\xaa', '\xab', '\xac', '\xad', '\xae', '\xaf', /* xb0-xb7 */ '\xb0', '\xb1', '\xb2', '\xb3', '\xb4', '\xb5', '\xb6', '\xb7', /* xb8-xbf */ '\xb8', '\xb9', '\xba', '\xbb', '\xbc', '\xbd', '\xbe', '\xbf', /* xc0-xc7 */ '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7', /* xc8-xcf */ '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef', /* xd0-xd7 */ '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xd7', /* xd8-xdf */ '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xdf', /* xe0-xe7 */ '\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7', /* xe8-xef */ '\xe8', '\xe9', '\xea', '\xeb', '\xec', '\xed', '\xee', '\xef', /* xf0-xf7 */ '\xf0', '\xf1', '\xf2', '\xf3', '\xf4', '\xf5', '\xf6', '\xf7', /* xf8-xff */ '\xf8', '\xf9', '\xfa', '\xfb', '\xfc', '\xfd', '\xfe', '\xff'];


//helper functions
var charIRCLower = compose(item(lowerTable), charCodeAt(0));

//returns the lower case value of a RFC1459 string using the irc table
IRCLowerMem = memoize(compose(join(""), map(charIRCLower)));

IRCLower = compose(join(""), map(charIRCLower));

function makeid() {
  var text = "";
  var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";

  for (var i = 0; i < 5; i++)
  text += possible.charAt(Math.floor(Math.random() * possible.length));

  return text;
}
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
mem
IRCLowerMem(makeid())
pending…
def
IRCLower(makeid())
pending…
caching working
IRCLowerMem(randomName())
pending…
no cache
IRCLower(randomName())
pending…

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