Statement: object
An object statement defines an object type which can later be used to create an object value. An object value is an array of other values which can referenced by number or given names. An object value also has a code name which is the name of the object type. Additionally functions can be defined which can be called using the function operator '@'.
The following sub-statements can be used in an object definition. All are optional.
| object Sub-Statement List | |
|---|---|
| Sub-Statement | Use |
| name | A short descriptive name for the object to expand its code name. |
| values | A list values that are used as local variables. |
| function | As normal function but has access to the values. |
| object Statement | |
|---|---|
| Example | Output |
| object complex { name "Complex number"; values real imaginary; function add( comp ) { if @object( comp ) = "complex" { result = {complex real+comp[real], imaginary+comp[imaginary]}; } else { result = error "Must have 'complex' argument"; }; }; }; let c1 = {complex 5, 9}; let c2 = c1@add( {complex 20, 6} ); write c1, c2 nl; write c1 @ add( c2 ) nl; write c1 @ add( 1 ) nl; | {complex 5, 9}, {complex 25, 15} {complex 30, 24} Error (9): Must have 'complex' argument |
Sub-Statement: name
The name sub-statement provides a short descriptive name for the object. This name can be used to expand the object's code name.
Sub-Statement: values
The values sub-statement consists of a list of names terminated with a semicolon. These are the names given to the fist values, in the order given.
The values in the object value array can be accessed or assigned to by using the subscript '[' ']' operator.
Sub-Statement: function
The function sub-statement is similar other functions except it has access to the objects values and it is instigated with the function '@' operator following an object value.
