A method of generating executable code for performing desired functionality. The method includes defining a component combination based on the desired functionality, the component combination being indicative of components to be implemented and connections between the components. The component combination is then used to cause components in the component combination to be implemented, with the components communicating using the connections and generating code fragments. At least two of the components communicate to determine a context, with one or more of the code fragments being at least partially based on the determined context. The generated code fragments are combined to thereby form the executable code which when executed by a suitable a processing system, causes the processing system to perform the desired functionality.