Dynamic object properties

A method for editing a computer-implemented object, the object having a property entry sheet for assigning a property of an object associated with an application, comprising:

• receiving an expression into a property input section of the property entry sheet, the expression being referenceable at run-time as a data value;
• parsing the expression;
• generating from the expression a function;
• and
• storing the function as a run-time value.

A computer implemented method for assigning a property to an object, the object having a value input adapted to receive a functional expression for the property, the functional expression being referenceable at run-time as a data value, the method comprising:

• receiving an expression for the property into the value input;
• parsing the expression and storing the expression as a function;
• and
• evaluating the expression at run-time in context to generate a referenceable data value for the property.

A computer system, comprising:

• a processor;
• a memory array coupled to said processor;
• a display coupled to said processor;
• a data storage device coupled to said processor for storing a computer-implemented object, including:
• an object state;
• and
• one or more interfaces providing access to the object state through a plurality of attributes, each of the attributes defined as a functional expression and referenceable at run-time as a data value.

Computer software for assigning a property to an object, the object having a value input adapted to receive a functional expression for the property, the functional expression being referenceable at run-time as a data value, the computer software residing on a computer-readable medium and comprising instructions for causing a computer to perform the following operations:

• receive an expression for the property into the value input;
• parse the expression and storing the expression as a function;
• and
• evaluate the expression at run-time in context to generate a referenceable data value for the property.