Extract Options from an OptionsPattern[] in a SysML Activity (1)

This example is from the Webel HelpF` package, which is examined in detail in later slides. The Private` helper function z$sigsUD has options represented by a Private` block z$opts$sigsUD, which has the custom Stereotype keyword «M:OptionsPattern» applied. Note that in the code (and the SysML model), the z$opts$sigsUD are shared by many functions (so nice and DRY).

Each Option is unpacked from the OptionsPattern[] using a ReadStructuralFeatureAction, the direct equivalent of using OptionValue.

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Extract Options from an OptionsPattern[] in a SysML Activity (2) DETAILED

Notes

[CONVENTION, NAMING, POLICY]{SUGGESTED} Webel: Mathematica: CONVENTION: A 'z$' prefix may be used to indicate a Private` function or expression within a package or a "private" method of an MTools class or Webel Abstract Data Type (ADT) stateless pseudo class.

[POLICY]{STRONG} About the Single Source of Truth (SSOT) and Don't Repeat Yourself (DRY) principles

[CONVENTION, MODELLING, NAMING]{STRICT} Webel: SysML4Mathematica: An OptionsPattern[] may be represented by an «M:OptionsPattern» SysMLv1 Block with «M:Opt» properties. An «M:Opt» property represents an Options[] Rule IMPLICITLY (an «M:Opt» does not use the Rule block modelling recipe).

[TIP] Mathematica: HOWTO: Strip an option from an OptionsPattern[] sequence before passing down (propagating) to a function with fewer options

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The Webel SysML4Mathematica recipe for modelling Wolfram Language code in Systems Modeling Language (SysML) for Model-Based Systems Engineering

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