2 Terminology of Operators in Swift
Terminology
Operators are unary, binary, or ternary:
Unary operators operate on a single target (such as -a). Unary prefix operators appear immediately before their target (such as !b), and unary postfix operators appear immediately after their target (such as c!).
Binary operators operate on two targets (such as 2 + 3) and are infix because they appear in between their two targets.
Ternary operators operate on three targets. Like C, Swift has only one ternary operator, the ternary conditional operator (a ? b : c).
The values that operators affect are operands. In the expression 1 + 2, the + symbol is an infix operator and its two operands are the values 1 and 2.
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