Html html = Html {
   Head {
      title = "Ceylon: home page";
   };
   Body {
      H2 ( "Welcome to Ceylon, ``user.name``!" ),
      P ( "Now get your code on :)" )
   };
};

- (unary minus) operator

The right-associative, unary - operator is used to invert the sign of its operand

Usage

Integer minusOne = -1;

Description

Definition

The - operator is defined as follows:

rhs.negativeValue;

See the language specification for more details.

Polymorphism

The unary - operator is polymorphic. The meaning of - depends on Invertable interface

Meaning of unary minus for built-in types

For the built in numeric types Integer and Float, - just changes the sign.

See also

• + (unary plus) which does not change the sign of its operand
• API documentation for Invertable
• arithmetic operators in the language specification
• operator precedence in the language specification
• Operator polymorphism and Numeric operator semantics in the Tour of Ceylon