okay, i'm trying to have the user add a key and value pair to a dictionary i created and have it show up in a table view. i do that just fine but i cant seem to figure out how to add another pair. when i go to add another it replaces the last one. id really like to have multiple pairs. can someone help please?
heres my code:
//declaring the dictionary
var cart = [String:String]()
//attempting to add to dictionary
cart[pizzaNameLabel.text!] = formatter.stringFromNumber(total)
This is how dictionary works:
In computer science, an associative array, map, symbol table, or dictionary is an abstract data type composed of a collection of (key, value) pairs, such that each possible key appears at most once in the collection.
var cart = [String:String]() cart["key"] = "one" cart["key"] = "two" print(cart)
will print only "key" - "two" part. It seems that you may need an array of tuples instead:
var cart = [(String, String)]() cart.append(("key", "one")) cart.append(("key", "two")) print(cart)
will print both pairs.