Access loop variable from within function

Question

Not the greatest title i know, alright, consider:

for (var i = 0; i < map.length; ++i) {
place_ore(mountain_ore,mountain_allowed_ores) 
}

And inside place_ore(), I am trying to access map[i];, however when I try to do this, it gives me an undefined error. I think it has something to do with scope, but I can't quite work it out myself, any ideas?

Thanks.

i doesn't exist inside the function..you can always pass i in as another variable. — tymeJV
– tymeJV, Commented Sep 15, 2014 at 14:44
What's the definition of the function place_ore? Does it allow a third parameter? — chridam
– chridam, Commented Sep 15, 2014 at 14:46

Jaime Torres · Accepted Answer · 2014-09-15 14:44:41Z

3

You need to pass it in:

for (var i = 0; i < map.length; ++i) {
    place_ore(mountain_ore,mountain_allowed_ores, map[i]) 
}

And of course, modify your function signature:

function place_ore(mountain_ore,mountain_allowed_ores, mapTile) {
   //..place some ore in mapTile instead of map[i]
}

answered Sep 15, 2014 at 14:44

Jaime Torres

10.5k1 gold badge50 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

AlwaysNeedingHelp Over a year ago

Wonderful, I didn't think about passing it using place_ore() - well, thank you tonnes!

Collectives™ on Stack Overflow

Access loop variable from within function

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related