I am writing 2 Mbyte file line by line and using string variable to populate the data line by line first
When i did in loops str = str + new_data it took couple seconds to process the script.
Once i changed to str += new data script finishes instantly.
Though += was a shortcut for same command they added in newer versions.
Why first syntax causes substantially more time to process?
P.S. When i needed to write 50 MByte file script was never finishing in minutes, i suspect that was a reason.