Note: information on this page refers to Ceylon 1.0, not to the current release.

! (not) operator

The right-associative, unary || operator is used to compute the logical not of its operand.

Usage 

Boolean true_ = !false;

Description

Definition

The ! operator is defined as:

if (rhs) false else true

See the language specification for more details.

Polymorphism

The ! operator is not polymorphic.

Type

The result type of the ! operator is Boolean.

Notes

  • The ! operator has a much lower precedence than other C-like languages!

See also