Description

An opaque structure representing a watched Gnome::Gtk4::Expression.

The contents of Gnome::Gtk4::N-ExpressionWatch should only be accessed through the provided API.

Class initialization

new

:native-object

Create an object using a native object from an object of the same type found elsewhere. See also Gnome::N::TopLevelSupportClass.

multi method new ( N-Object() :$native-object! )

Methods

evaluate

Evaluates the watched expression and on success stores the result in value.

This is equivalent to calling .evaluate() in class Expression with the expression and this pointer originally used to create watch.

method evaluate ( N-Object $value --> Bool )

• $value; an empty Gnome::GObject::N-Value to be set

Return value; True if the expression could be evaluated and value was set.

ref

Acquires a reference on the given Gnome::Gtk4::N-ExpressionWatch.

method ref (--> N-Object )

Return value; the Gnome::Gtk4::N-ExpressionWatch with an additional reference.

unref

Releases a reference on the given Gnome::Gtk4::N-ExpressionWatch.

If the reference was the last, the resources associated to self are freed.

method unref ( )

unwatch

Stops watching an expression.

See .watch() in class Expression for how the watch was established.

method unwatch ( )