undef()

Syntax

undef(expr)

Removes all bindings of a variable with a name of expr. Removes also all function definitions with that name. It can affect global variable pool, and local variable set for a particular function.

inc(i) -> i+1; foo = 5; inc(foo) => 6
inc(i) -> i+1; foo = 5; undef('foo'); inc(foo) => 1
inc(i) -> i+1; foo = 5; undef('inc'); undef('foo'); inc(foo) => Error: Function inc is not defined yet at pos 53