You have already learnt about arrays and loops in previous tutorials. In this tutorial, we're going to dive deeper into these two topics.
Array's are written within square brackets [ ]. Use the .count attribute to get number of elements inside the array and square brackets [index] to access data of that specific index. Remember the first element is at index 0.
type=codeblock|id=swift_arrays_review|autocreate=swift4var colors = ["red", "blue", "green"]print(colors) // redprint(colors) // greenprint(colors.count) // 3
Assignment with an = on Array's makes a copy.
var b = colors // copies the Array onto the new variable
The "empty array" is just an empty pair of brackets [ ]. The + works to append two arrays, so [1, 2] + [3, 4] yields [1, 2, 3, 4] (this is just like + with strings).