Micro optimization: use Pos before StringReplace

[Mike Torrettinni 198]

2 hours ago, PhilPlus said:

I really don't understant the interest of putting StringReplace out of the current method.

To avoid Delphi's string protection that can be slow when performance is needed, but string change is rarely actually changed. See more here: https://www.delphitools.info/2009/05/06/code-optimization-go-for-the-jugular/

 

2 hours ago, PhilPlus said:

Just note that there are a lot of StringReplace more efficient than the RTL one, and I think usi,g it  is the best way for better performances. 

What Delphi version are you talking about, what faster function?

[Fr0sT.Brutal 900]

14 hours ago, PhilPlus said:

Just note that there are a lot of StringReplace more efficient than the RTL one, and I think usi,g it  is the best way for better performances.

Currently it's much better than it was

[PhilPlus 6]

On 3/10/2021 at 8:58 AM, Fr0sT.Brutal said:

Currently it's much better than it was

You are right (it was true with XE7) tested with 10.3.1 more or less the same perfs.

[PhilPlus 6]

On 3/9/2021 at 9:20 PM, Mike Torrettinni said:

To avoid Delphi's string protection that can be slow when performance is needed, but string change is rarely actually changed. See more here: https://www.delphitools.info/2009/05/06/code-optimization-go-for-the-jugular/

 

What Delphi version are you talking about, what faster function?

As said to Fr0sT.Brutal it is not true with latest versions, I tried with 10.3.1 and the time is more or less the same ! 

[Mike Torrettinni 198]

 

31 minutes ago, PhilPlus said:

As said to Fr0sT.Brutal it is not true with latest versions, I tried with 10.3.1 and the time is more or less the same ! 

That's why is good to benchmark a version you are migrating to, in case the important project performance gets better or worse. Will do the same when moving from 10.2.3 to 10.5.