A string is an ordered collection of characters, such as Hello
or Swift
. In Swift, the string type represents a string. We have seen several examples of strings already in this book, so the following code should look familiar. This code shows how to define two strings:
var stringOne = "Hello" var stringTwo = " World"
Since a string is an ordered collection of characters, we can iterate through each character of a string. The following code shows how to do this:
var stringOne = "Hello" for char in stringOne { println(char) }
The preceding code will display the results shown in the following screenshot:
There are two ways to add one string to another string. We can concatenate them or we can include them inline. To concatenate two strings, we use the +
or the +=
operator. The following code shows how to concatenate two strings. The first example appends stringB
to the end of stringA
and the results are put into a new stringC
variable. The second example appends stringB
directly...