Mega trim test (v43)

Revision 43 of this benchmark created by Yesudeep Mangalapilly on

Description

Testing "trim-native" and "trim27" (from rev7) with the following trim functions:

Preparation HTML

<script>
var WHITESPACE_ = [];
WHITESPACE_[0x0009] = true;
WHITESPACE_[0x000a] = true;
WHITESPACE_[0x000b] = true;
WHITESPACE_[0x000c] = true;
WHITESPACE_[0x000d] = true;
WHITESPACE_[0x0020] = true;
WHITESPACE_[0x0085] = true;
WHITESPACE_[0x00a0] = true;
WHITESPACE_[0x1680] = true;
WHITESPACE_[0x180e] = true;
WHITESPACE_[0x2000] = true;
WHITESPACE_[0x2001] = true;
WHITESPACE_[0x2002] = true;
WHITESPACE_[0x2003] = true;
WHITESPACE_[0x2004] = true;
WHITESPACE_[0x2005] = true;
WHITESPACE_[0x2006] = true;
WHITESPACE_[0x2007] = true;
WHITESPACE_[0x2008] = true;
WHITESPACE_[0x2009] = true;
WHITESPACE_[0x200a] = true;
WHITESPACE_[0x200b] = true;
WHITESPACE_[0x2028] = true;
WHITESPACE_[0x2029] = true;
WHITESPACE_[0x202f] = true;
WHITESPACE_[0x205f] = true;
WHITESPACE_[0x3000] = true;

var trim_yesudeep = function(str){
  var len = str.length;
  if (len){
    var i = 0;
    while (WHITESPACE_[str.charCodeAt(--len)]);
    if (++len){
      while (WHITESPACE_[str.charCodeAt(i)]){ ++i; }
    }
    str = str.substring(i, len);
  }
  return str;
};

  function trim27(str) {
    var c;
    for (var i = 0; i < str.length; i++) {
        c = str.charCodeAt(i);
        if (c == 32 || c == 10 || c == 13 || c == 9 || c == 12) continue; else break;
    }
    for (var j = str.length - 1; j >= i; j--) {
        c = str.charCodeAt(j);
        if (c == 32 || c == 10 || c == 13 || c == 9 || c == 12) continue; else break;
    }
    return str.substring(i, j + 1);
}
 function trim28(str) {
    var c;
    for (var i = 0, j = str.length; i < j; i++) {
        c = str.charCodeAt(i);
        if (c == 32 || c == 10 || c == 13 || c == 9 || c == 12) continue; else break;
    }
    for (j--; j >= i; j--) {
        c = str.charCodeAt(j);
        if (c == 32 || c == 10 || c == 13 || c == 9 || c == 12) continue; else break;
    }
    return str.substring(i, j + 1);
}
  function trim_native(str) {
         return str.trim(); // should throw is no such function
  }

  function trim19(str){
      var str = str.replace(/^\s\s*/, ''),
          ws = /\s/,
          i = str.length;
      while (ws.test(str.charAt(--i)));
      return str.slice(0, i + 1);
  }
  // Licensed under BSD - http://flesler.blogspot.com/2008/11/fast-trim-function-for-javascript.html
  function myBestTrim( str ){
    var start = -1,
      end = str.length;
    while( str.charCodeAt(--end) < 33 ){};
    while( str.charCodeAt(++start) < 33 ){};
    return str.substring( start, end + 1 );
  };

  var inp = "    \n\n \n\n   a \n a\n  a\n    a\n   a  \n\t\ta\t\ta\njahsdkjahkjshdakjhsdkahskd akhsjdh akjshd kashdkajhsd kajshd \nkauyiuqhwep iasldk qpwoie ad  \n   askdjaslkdjaslkjdaoiur qowioqwhr aspodiquw ijasod iqwiue pqowipoqiw epoqiwpeo iaslkjdqur \t kjahsdkj hakshd\nkajhdk\nk as d  \t\n".split('\n');
  
  function e(f) {
     var x = [];
     for (i = 0; i < inp.length; i++) {
       x.push(f(inp[i]));
     }
     return x;
  }
//it's unfair to wrap the native function, within an outer dummy function since this doesn't represent real world usage
function native(){
     var x = [];
     for (i = 0; i < inp.length; i++) {
       x.push(inp[i].trim());
     }
     return x;
}
</script>

Setup

//Need to reset input after each time, otherwise subsequent tests have advantage cause the string doesn't have whitespace
    inp = "    \n\n \n\n   a \n a\n  a\n    a\n   a  \n\t\ta\t\ta\njahsdkjahkjshdakjhsdkahskd akhsjdh akjshd kashdkajhsd kajshd \nkauyiuqhwep iasldk qpwoie ad  \n   askdjaslkdjaslkjdaoiur qowioqwhr aspodiquw ijasod iqwiue pqowipoqiw epoqiwpeo iaslkjdqur \t kjahsdkj hakshd\nkajhdk\nk as d  \t\n".split('\n');

Test runner

Ready to run.

Testing in
TestOps/sec
trim-native
native();
ready
trim27
e(trim27);
ready
trim19
e(trim19)
ready
trim28
e(trim28);
ready
trim_yesudeep
e(trim_yesudeep)
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.