Speed test - string concat

gistfile1.txt

<cfscript>
iterations = 1000;
sampletext = RepeatString("Lorem ipsum dolor sit amet, consectetuer adipiscing elit.", 100);
result = [];

// Method 1
i = 0;
startTime = getTickCount();
finalString = "";
while ( i < iterations ) {
  finalString = finalString & sampletext;
  i++;
}

endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="concat", ms=totalTime } );


// Method 2
i = 0;
startTime = getTickCount();
finalString = "";
while ( i < iterations ) {
  finalString &= sampletext;
  i++;
}
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="concat shorthand", ms=totalTime } );


// Method 3
i = 0;
startTime = getTickCount();
finalString = "";
while ( i < iterations ) {
  finalString = ListAppend( finalString, sampletext, Chr(1) );
  i++;
}
finalString = ListChangeDelims( finalString, "", Chr(1) );
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="ListAppend", ms=totalTime } );


// Method 4
i = 0;
startTime = getTickCount();
finalString = [];
while ( i < iterations ) {
  ArrayAppend( finalString, sampletext );
  i++;
}
finalString = ArrayToList( finalString, "" );
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="ArrayAppend", ms=totalTime } );


// Method 5
i = 0;
startTime = getTickCount();
finalString = [];
savecontent variable="finalString"{
  while ( i < iterations ) {
    WriteOutput( sampletext );
    i++;
  }
}
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="cfsavecontent", ms=totalTime } );



// Method 6
i = 0;
startTime = getTickCount();
finalString = CreateObject( "java", "java.lang.StringBuffer" ).init();
savecontent variable="finalString"{
  while ( i < iterations ) {
    finalString.append( sampletext );
    i++;
  }
}
finalString = finalString.toString();
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="StringBuffer", ms=totalTime } );


// Method 7
i = 0;
startTime = getTickCount();
finalString = CreateObject( "java", "java.lang.StringBuilder" ).init();
savecontent variable="finalString"{
  while ( i < iterations ) {
    finalString.append( sampletext );
    i++;
  }
}
finalString = finalString.toString();
endTime = getTickCount();
totalTime = endTime-startTime;

ArrayAppend( result, { label="StringBuilder", ms=totalTime } );



writeDump(result);
</cfscript>