AHK - GetFileLines()

This is a simple function that retrieves the total number of lines in a text file, without using any loops. I tested it on a file with about 1200 lines and it took less than 20ms.

GetFileLines(ByRef OutputVar,FileLocation) {
  FileRead, File, % FileLocation
  StringSplit, Lines, File, `n
  OutputVar := Lines0
}

Example use

GetFileLines(TotalLines,"YourTextFile.txt")
MsgBox YourTextFile.txt has %TotalLines% lines!

Forum Post