Unary Operators (Java and Delphi Cross Reference Guide)

An operation with only one operand (a single input). The Java unary operators are ++, --, +, -, ~, and !.

• + Indicates positive value (numbers are positive without this)
• - Negates an expression
• ++ Increment operator by 1
• -- Decrement operator by 1
• ! Logical complement operator (inverts the value of a boolean)
• ~ Bitwise inversion operator (works on integral data types)

An operation with only one operand (a single input). In Object Pascal, a unary operator has the highest precedence and always precedes its operand (for example, -B), except for the  ^ pointer operator, which follows its operand (for example, P^). In addition to the obvious +, -, and Not operators, Delphi also offers:

The TYPE operator is also a unary operator and is valuated at compile time. The TYPE operator returns the size in bytes of the operand,