RE: Speeding up XCode?
RE: Speeding up XCode?
- Subject: RE: Speeding up XCode?
- From: Jeff Laing <email@hidden>
- Date: Wed, 19 Oct 2005 14:52:56 +1000
> > are you trying to make my code run slower?
Frankly, I don't see where anyone producing code that looks like this:
(from http://optusnet.dl.sourceforge.net/sourceforge/yasse/yasse-2.2.0.m)
digit = [[mystringvalue substringFromIndex: 0] substringToIndex: 1];
if ([digit isEqualTo: @"1"])
{
result = result * 10;
result = result + 1;
}
else if ([digit isEqualTo: @"2"])
{
result = result * 10;
result = result + 2;
}
else if ([digit isEqualTo: @"3"])
{
result = result * 10;
result = result + 3;
}
else if ([digit isEqualTo: @"4"])
{
result = result * 10;
result = result + 4;
}
else if ([digit isEqualTo: @"5"])
{
result = result * 10;
result = result + 5;
}
else if ([digit isEqualTo: @"6"])
{
result = result * 10;
result = result + 6;
}
else if ([digit isEqualTo: @"7"])
{
result = result * 10;
result = result + 7;
}
else if ([digit isEqualTo: @"8"])
{
result = result * 10;
result = result + 8;
}
else if ([digit isEqualTo: @"9"])
{
result = result * 10;
result = result + 9;
}
else if ([digit isEqualTo: @"0"])
{
result = result * 10;
};
mystringvalue = [mystringvalue substringFromIndex: 1];
};
gets to blame the compiler for producing sub-optimal runtime. The amount of
Objective-C overhead thats deliberately introduced here, for now good
reason, is mindboggling.
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