Change array value from within "for loop"? Topic is solved

[RomAnT]

Is this a bug or feature, that you cannot change the value from within for loop?

Code: Select all

myArr := ["one", "two", "three"]

for , val in myArr {
	val := 1
}

for , val in myArr {
	msgbox val
}

[boiler]

It's not a bug. It's documented behavior. The variable val is just a variable containing the value of the array element, not a pointer to the array element.

The variables in which to store the values returned by the enumerator at the beginning of each iteration.

You can change the value of an array element in the loop, but not by changing the value of that temporary loop variable.

Code: Select all

myArr := ["one", "two", "three"]

for key, val in myArr {
	myArr[key] := 1
}

for , val in myArr {
	msgbox val
}