variable annotation

The variable annotation marks a reference that may be assigned more than once.

Usage

void example() {
    variable Integer i;
    i = 1;
    i = 2;
}

Description

By default, references are immutable. They are assigned a value once, and may not be reassigned. The Ceylon compiler statically verifies that a reference not declared variable is never assigned more than once. The variable annotation disables this verification, allowing a reference to be assigned multiple times.

See also

• API documentation for variable
• Reference for annotations in general