mORMot Open Source

ertank

Member

Registered: 2016-03-16

Posts: 168

Code to execute faster

Hi,

Trying to save as many CPU cycles as possible.

Using OnKeyPress event of a TEdit. Want to Check if Key is 'x' character (case insensitive). CharCase property of the component is ecNormal. Current code is:

if SynCommons.UpperCase(Key) = 'X' then
begin
end;

I have checked UpperCase function and it seems to do lots of things inside. I have changed my code as follows:

if Key = 'x' or Key = 'X' then
begin
end;

However, I do wonder if there is any code that can be proposed to execute faster.

Thanks.

ab

Administrator

From: France

Registered: 2010-06-21

Posts: 14,660

Website

Re: Code to execute faster

The 2nd version would be faster, indeed.

But I'm sure you are making premature optimization, here.
https://en.wikipedia.org/wiki/Program_o … o_optimize

You should not optimize such code lines, which are not run often.
Use a profiler to show the real bottlenecks of your app, then optimize only what is needed.

ertank

Member

Registered: 2016-03-16

Posts: 168

Re: Code to execute faster

I could only find ProDelphi myself.

What other profiler(s) are available free for Delphi 10 which I may try?

ab

Administrator

From: France

Registered: 2010-06-21

Posts: 14,660

Website

Re: Code to execute faster

https://www.delphitools.info/samplingprofiler/