Claro/docs/V1_15_OBJECTS_CLASSES.md

Claro v1.15.26 Objects and Classes

Claro objects are meant to stay plain and readable. Learners can start with variables and functions, then grow into classes when they are ready.

Basic class

CLASS Player
    HAS name TEXT
    HAS score NUMBER
END

NEW Player player
SET player.name "Jon"
SET player.score 10

SAY player.name
SAY player.score

Methods

Methods are taught with the same TEACH word used for normal functions.

CLASS Player
    HAS name TEXT
    HAS score NUMBER

    TEACH show
        SAY name
        SAY score
    END

    TEACH add points
        SET score score + points
    END
END

NEW Player player
SET player.name "Jon"
SET player.score 10

DO player.show
DO player.add 5
SAY player.score

Inside a method, class fields such as name and score are available directly.

Typed fields

Fields can have simple Claro types:

HAS name TEXT
HAS score NUMBER
HAS ready YESNO

When an object is created, Claro creates default field values and remembers their types. This means an accidental bad value can be caught:

SET player.score "oops"

will fail because score is a NUMBER field.

Object helper commands

OBJECT CLASS player AS kind
OBJECT FIELDS player AS fields

These are useful for teaching and debugging.