XLISP self

Nyquist / XLISP 2.0 - Contents | Tutorials | Examples | Reference

# self

Type: | - | symbol
Source: | - | xlobj.c

## Syntax

self

## Description

The 'self' symbol evaluates to the current object when used within a message context.

## Examples

    (setq my-class (send class :new '(state)))               ; create MY-CLASS with STATE

    (send my-class :answer :isnew '()                        ; set up initialization
                                  '((setq state nil) SELF))  ;   returning SELF

    (send my-class :answer :set-it '(value)                  ; create :SET-IT message
                                   '((setq state value)))

    (setq my-obj (send my-class :new))                       ; create MY-OBJ of MY-CLASS
    (send my-obj :set-it 5)                                  ; STATE is set to 5

Context: 'self' does not exist except within the context of a method and it's execution.

Note: In the previous example, there is a 'self' in the line that creates the ':set-it' message. What this does is to return the object as the last operation when you do an :isnew.

See the self symbol in the XLISP 2.0 manual.

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Nyquist / XLISP 2.0 - Contents | Tutorials | Examples | Reference