An operator is a symbol or combination of symbols that we can use to check, change, or combine values. We have used operators in most of the examples in the first two chapters; however, we did not specifically call them operators. In this section, we will show how to use most of the basic operators that Swift supports.
Swift supports most standard C operators and also improves them to eliminate several common coding errors. For example, the assignment operator does not return a value to prevent it from being used when the equality operator (==
) was meant to be used.
Let's look at the operators in Swift.