result

The value being returned, inside an ensures clause.

For a function returning Result<T, E>, result is the whole Result. A function with an ensures cannot have a parameter named result. Contextual: elsewhere result is an ordinary name.

fn double(int n) -> int
    ensures result == n * 2
{
    return n + n;
}

See also#

• Result
• fn: Declares a function, a method, or (written in an expression) an anonymous function.
• let: Declares a mutable local variable.
• const: Declares a binding that cannot be reassigned: a local, a module constant, or a class field that is set only by new.
• static: Declares a module-level or class-level slot shared by the whole program, or a method without self.
• readonly: A read-only view of a value: nothing reachable through it can be changed.
• if: Runs a block when a bool condition is true.
• else: Introduces the branch of an if that runs when its condition is false (or its pattern does not match).