Checks if the expression is static.
A static expression will never change its result when gtk.expression.Expression.evaluate is called on it with the same arguments.
That means a call to gtk.expression.Expression.watch is not necessary because it will never trigger a notify.
TRUE if the expression is static
Checks if the expression is static.
A static expression will never change its result when gtk.expression.Expression.evaluate is called on it with the same arguments.
That means a call to gtk.expression.Expression.watch is not necessary because it will never trigger a notify.