In Swift, operators can be categorized into several groups based on their functionality. This list categorizes all of the Swift operators into their appropriate categories based on their functionality and gives a short description about their function:
Unary Operators
They perform operations on a single operand, such as negating its value or checking its type.
- + unary plus operator
- – unary minus operator
- ! logical NOT operator
Arithmetic Operators
They perform basic arithmetic calculations on numeric values, such as addition and multiplication.
- + addition operator
- – subtraction operator
- * multiplication operator
- / division operator
- % remainder operator
Compound Assignment Operators
They combine an arithmetic operation with an assignment operation, such as adding a value to a variable and assigning the result back to the variable.
- += addition assignment operator
- -= subtraction assignment operator
- *= multiplication assignment operator
- /= division assignment operator
- %= remainder assignment operator
Comparison Operators
They compare two values and return a Boolean result indicating whether the comparison is true or false.
- == equal to operator
- != not equal to operator
- < less than operator
- > greater than operator
- <= less than or equal to operator
- >= greater than or equal to operator
Logical Operators
They perform logical operations on Boolean values, such as negating a Boolean value or combining two Boolean values using AND or OR.
- ! logical NOT operator
- && logical AND operator
- || logical OR operator
Range Operators
They create a sequence of values, typically used with loops to iterate over a range of values.
- … closed range operator
- ..< half-open range operator
Ternary Conditional Operator
This is shorthand way of writing a conditional expression that returns one of two values depending on whether a condition is true or false.
- a ? b : c ternary conditional operator (Think of the ternary if-then operator)
Nil-Coalescing Operator
It provides a default value to use when an optional value is nil.
- a ?? b nil-coalescing operator
Type-Casting Operators
It converts a value from one type to another, either by checking the value’s type or by forcing the conversion.
- as type casting operator
- as? optional type casting operator
- as! forced type casting operator
Bitwise Operators
They perform low-level operations on binary data, such as AND, OR, XOR, and bit shifting.
- & bitwise AND operator
- | bitwise OR operator
- ^ bitwise XOR operator
- ~ bitwise NOT operator
- << bitwise left shift operator
- >> bitwise right shift operator
Overflow Operators
They perform arithmetic operations on numeric values, while detecting and handling arithmetic overflow conditions.
- &+ arithmetic overflow addition operator
- &- arithmetic overflow subtraction operator
- &* arithmetic overflow multiplication operator
Identity Operators
They test whether two variables or constants refer to the same object or location in memory.
- === identity operator
- !== non-identity operator
