Data commit

Task/Array-length/Batch-File/array-length.bat

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+@echo off
+
+:_main
+setlocal enabledelayedexpansion
+
+:: This block of code is putting a list delimitered by spaces into an pseudo-array
+:: In practice, this could be its own function _createArray however for the demonstration, it is built in
+set colour_list=red yellow blue orange green
+set array_entry=0
+for %%i in (%colour_list%) do (
+  set /a array_entry+=1
+  set colours[!array_entry!]=%%i
+)
+
+call:_arrayLength colours
+echo _arrayLength returned %errorlevel%
+pause>nul
+exit /b
+
+:: _arrayLength returns the length of the array parsed to it in the errorcode
+:_arrayLength
+setlocal enabledelayedexpansion
+
+:loop
+set /a arrayentry=%arraylength%+1
+if "!%1[%arrayentry%]!"=="" exit /b %arraylength%
+set /a arraylength+=1
+goto loop