1.35 class create

Class create defines a function that creates new instances like the interface predicate new/2. The first argument is either the name of the class to create instances from or a class object. The remaining arguments are packed into the code_vector object create<-arguments.

Instances may also be created using class ?:

?- new(CreatePoint, ?(@pce, instance, point)).
?- new(CreatePoint, class(point)? instance).

Class create is more comfortable to write, is faster and does not require the class to exist when the create instance is created.

See create<-_execute for a description of the creation process. See also pce<-instance, class<-instance, @vmi_new and new/2.

1.35.1 Instance variables

create <-> argument: code_vector*

Arguments used to create instance. @nil is interpreted as an empty argument vector.

create <-> class: name|

class class (name) to create instance of. If it is a name, it will be dereferenced to a class object on the first create<-_execute call.

1.35.2 Send methods

create ->argument: index=int, value=any|function

Access the nth (1-based) argument in the argument vector used to create new instances.

create ->initialise: class=name|class, argument=any|function ...

The first argument is either the name of a class or a class object. The remaining arguments are packed in the code_vector object create<-arguments. See create<-_execute for the evaluation of create objects.

1.35.3 Get methods

create <-_execute: -> unchecked

Create an instance of create<-class using create<-arguments. If create<-class is a name, it is converted into a class object and the slot is replaced with the class object to speed up subsequent execution of this create object.

Function objects in create<-arguments are expanded (as with message objects and ? objects) and finally the VMI new() is activated to create the new instance.

create <-argument: index=int -> value=any|function

Inherits description from: create->argument