Tuple vs Dictionary differences

Question

Can someone please explain what the major differences there are between Tuples and Dictionaries are and when to use which in Swift?

Answer 1

A dictionary is made up of key-value sets. A tuple is made for passing grouped values.

Dictionaries:

A dictionary is a container that stores multiple values of the same type. Each value is associated with a unique key, which acts as an identifier for that value within the dictionary.

A dictionary should be used for creating lists of associated objects. An example use would be a dictionary of players and their scores:

var scoreDictionary = ["Alice" : 100, "Bob" : 700]

Tuples:

Tuples group multiple values into a single compound value.

A tuple should be used for passing groups of values. They are similar to arrays, but are fixed-length and immutable. An example use might be a tuple representing a 3-dimensional point:

var myPoint = (10, 12, 14)

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As you can see there are many cases in which you would use a dictionary and many cases in which you would use a tuple. Each has its own specific purpose.