Array syntax Topic is solved

[stepanVL]

I've tried several ways to use Loop, read %arrayName[arrayIndex]%, but none of them work. What is the correct syntax?

Code: Select all

param := []
param[1] := "C:\folder\a.txt"
param[2] := "C:\folder\b.txt"
i:=1
source := param[i]

; Loop, read,   param[i]  ; fails because string is treated literally
; Loop, read,   param%i% ; fails because string is treated literally
; Loop, read,   %param[i]% ; fails somehow
; Loop, read,   %%param[%i%]%% ; fails somehow

Loop, read,   %source% ; This works
	MsgBox % A_LoopReadLine

[runie]

Read about expressions: https://autohotkey.com/docs/Variables.htm#Expressions

[BoBo]

Loop, Read,% param[1]

Force an expression: An expression can be used in a parameter that does not directly support it (except OutputVar parameters) by preceding the expression with a percent sign and a space or tab. In [v1.1.21+], this prefix can be used in the InputVar parameters of all commands except the traditional IF commands (use If (expression) instead). This technique is often used to access arrays. For example: ...

[jeeswg]

Code: Select all

q::
obj := []
obj[1] := "C:\folder\a.txt"
obj[2] := "C:\folder\b.txt"
Loop, % obj.Length()
	MsgBox, % obj[A_Index]
for vKey, vValue in obj
	MsgBox, % vKey " " vValue
return

[stepanVL]

Code: Select all

Loop, % obj.Length()

This answers the question. Thank you.