Performance improvement splitting huge file

[mdijkens]

Well dang. Alright. So, this is something being used in production, eh? Do you work for an energy company?

No not working for energy company, but supporting customers of which one is energy-network company.
I've lots of these small QB64 utilities being used in real production-environments.

I love QB64 for file-related stuff that is too complicated for scripting and it is blazingly fast.
Except in this scenario with lots of Mid$/replacements in huge files, but SMcNeill really helped in learning _MEM and I was also surprised to learn something new about Asc() with position and usage as a method !!
Asc(hugeString, 123456789) = Asc(otherHugeString, 987654321) is amazing