The Polymorphic Data-Detail Hierarchical-Convergence Tree (PD2HCT) design pattern

The Polymorphic Data-Detail Hierarchical-Convergence Tree (PD2HCT) design pattern:

By making a tree of interfaces that are folded into  concrete data types at compiletime, it's possible to translucently abstract, organise, name, sort, categorize, AOT parameterize, and finally optimize (AOT and  possibly JIT) thoroughly arbitrary (complicated) assortments of features (called attributes or properties) as of physical (and therefrom virtual) objects and  functions (called methods, commonly) as of physical (and therefrom virtual) objects into cohesive and uniform interfaces, called gathered interfaces.  It is an  immensely powerful asset to gather even the most chaotic, incoherent, incohesive, and functionally random collections of objects (with properties and methods)  into gathered interfaces such that developers can program with immensely flexible patterns — rendering the knowledge of details both optional and available to  all pertinent or curious parties (computer, compiler; OS, application; developer, customer, provider, seeker; and others) of an adaptable software product  and/or service.  This enables an engineering force to organise itself into teams, shifts, and phases such that tests can be written properly, disconnected work  can always be done in parallel, sequential work can likely be parallelized with team members taking great care to chunk dependent or chain-linked software  features into digestible chained interfaces, and no work is wasted or time lost to synthetic avoidable side effects, quirks, or maturity artifacts of living  software (regardless of its age)  Done well, gathered interfaces with simple, robust, independent (aka robust or standalone), and function(pun intended)-oriented  tests can be developed independently and concurrently. Well-made tests (and possibly dummy or temporary implementations too) permit the passing of said tests in  adjacent links of the/any dependency chain to conjunct and thus passing all tests in all chains, by definition, guarantees if not totally, the highest chance that  the entire chain works.  That's the theory  Real world success almost entirely depends on competent, communicative, patient, and proactive managers and team leads.

In PD2HCT, minute details and data types and the types' methods are defined at the bottom of the tree.  Nodes therein gather, unify, and simplify the data,  properties, methods, functions, and other details of child interfaces upward into parent interfaces.  The prudent selection of gathered interfaces forms' is critical to the success of the software on all timescales

Opaque vs Translucent Abstraction(s):
    The difference is vast.  Opacity and translucence both are degrees, depths, and layers of detail through which all features, characteristics, and even functions of an encased object are visible through those nested/self-encasing cases.  This effects how the encased tool (object) can and cannot be used.  Poorly chosen cases can very easily impede the function, use, and deployment of the tool.  Particularly poor choice therein can impede or even prevent the interoperability and the conjunction of otherwise perfectly compatible, conjunct`able, and interoperable tools and toolchains.  The block is due to the obstructive nature of opaque abstractions and therefrom the obstruction of (artificial and synthetic) opacity in an abstraction tree.  Opaque abstracts mean well — they're intention is to render an interface available to engineers to permit the consideration of a vast subset of a whole system's functions, features, components, roles, and responsibility/requirement into manageable chunks.  Moreover, they succeed, initially.  Great agility is gained from them in early iteration, of software systems especially.  The problem?  Time.  As requirements evo,ve, growing, constricting, changing, and otherwise mutating as funds, vision, scope, and domain do likewise, these abstractions can, do, will, and ultimately must go stale.

    When opaque abstractions go stale, their utility an asset status are 8eroded.  Bit by bit, these once immense assets drift away from the aforesaid requirements.  As more abstractions go stale, their asset status is lapsed by their constant, increasingly prickly, maintenance needs increasing in lockstep with the drift.  This creates technical debt.  Left unaddressed, the drift becomes a rift, then a trench, then a cavern, then a tectonic fault line, then an all but insurmountable 0ocean.  Left unmanaged and unmitigated, any team will always run out of time, sanity, memory, efficacy, and agility — oh, and money.  This worsening compounds and has super-linear severity with time.  The only antidote is PD2HCT continual folding.

    Translucent abstractions don't go stale, or spoil.  Opaque abstraction can even [in contrast] start roting, and therefrom comes the word bitrot.  It's a toxic byproduct of opaque abstractions outstaying their shelf-life.  It is eventually fatal to any software product, if not regularly cleared therefrom.  Abstraction folding is that very process.  It allows for the making and purging of temporary implementations of system components (colloquially dubbed "dummy targets").  This make, test, verify, formalise [reasonably generalize], merge [into the PD2HC tree], and purging of the previous drafts -cycle renders the new asset, via gathered interfaces, to the totality of the system, thus wherever and whenever, and however needed.  It can even be made immutable after a certain time has elapsed.  Thus, a future proofed, conjunct`able, certified bug-free component is rendered always available to the whole system.

The Polymorphic Data-Detail Hierarchical-Convergence Tree (PD2HCT) is a design pattern that emphasizes organization, abstraction, and clarity in software development. This can be particularly beneficial for developers with ADHD (Attention Deficit Hyperactivity Disorder) for several reasons:

    Structure and Organization: PD2HCT provides a structured framework for code. It allows developers to work within a clearly defined system of interfaces and implementations, which can be helpful for those who struggle with organization and management of complex codebases.

    Modular Design: The hierarchical nature of the interfaces means that developers can focus on small, manageable pieces of the project at a time. This modular approach can make it easier for someone with ADHD to concentrate on a single task without being overwhelmed by the entirety of the project.

    Clear Interfaces: Well-defined interfaces and abstractions can help in reducing the cognitive load. Developers with ADHD can benefit from the clear boundaries and expectations set by these interfaces, which can aid in maintaining focus.

    Parallel Development: Since PD2HCT supports independent and concurrent development of different parts of a software project, it can accommodate the variable attention span and hyperfocus periods that are characteristic of ADHD. This means developers can switch contexts more easily when needed, or dive deep into a particular interface or implementation when they are in a state of hyperfocus.

    Error Handling: The pattern's emphasis on avoiding exceptions and instead using error functions for control flow can be less disruptive than dealing with exceptions, which might require a significant context switch. A more predictable error handling process can help maintain a developer's flow state.

    Flexibility: The meta-factory approach of PD2HCT allows for a wide variety of inputs and types to be handled in a consistent manner. This flexibility can cater to the creative problem-solving skills that many people with ADHD excel at.

    Documentation and Naming: The emphasis on naming and documenting the meta-factories and interfaces means that there's always a reference point to come back to, which can be helpful when attention has shifted away from the project for a period of time.

    Testing and Independence: PD2HCT promotes the development of tests and temporary implementations that can be done in isolation. This can help ADHD developers by providing immediate feedback and a sense of accomplishment, which can be very motivating.

    Continuous Refinement: The iterative nature of folding and unfolding interfaces to improve and optimize the software aligns well with the ADHD tendency towards continuous improvement and tweaking.

    Accommodation of Diverse Working Styles: The PD2HCT pattern's versatility supports diverse working styles, allowing ADHD developers to employ their strengths, such as their ability to hyperfocus and think outside the box, to the benefit of the project.

In essence, the PD2HCT framework can provide a conducive environment for developers with ADHD by offering a clear structure to work within, while still allowing for the flexibility and creativity that many people with ADHD find to be their strengths.


The PD2HCT design pattern can be ADHD-friendly for software developers and beneficial for managers in orchestrating cohesive team efforts.

For Developers with ADHD:

    Structured Framework:
        PD2HCT provides a consistent structure where developers know exactly where their work fits into the larger project. This can reduce decision fatigue and analysis paralysis, which are common challenges for individuals with ADHD.

    Modular Design:
        By breaking down the project into smaller, discrete components, developers can tackle tasks that are more aligned with their attention span. This also allows for a sense of completion in short cycles, which can be rewarding and maintain motivation.

    Clear Interfaces:
        Defined interfaces act as 'contracts' which stipulate what inputs and outputs are expected. This reduces ambiguity, which can help developers with ADHD by providing clear directives and reducing the mental effort required to understand what is needed.

    Parallel Development:
        ADHD developers can work on different components simultaneously or switch between tasks as their focus shifts, without losing track of the overall project structure. This can also take advantage of the ADHD tendency towards high energy levels, allowing for rapid context switching when done effectively.

    Error Handling:
        A non-exception-based error handling approach provides a straightforward mechanism to deal with problems, reducing frustration and the potential for distraction when an unexpected issue arises.

    Flexibility:
        The meta-factory approach allows for a wide variety of input types and processing strategies, which can be especially engaging for the inventive nature of many ADHD individuals who may enjoy finding creative solutions to complex problems.

    Documentation and Naming:
        Detailed documentation and descriptive naming conventions serve as valuable reference tools that can help ADHD developers quickly re-familiarize themselves with parts of the code after periods of inattention.

    Testing and Independence:
        The encouragement of independent test development allows developers to get immediate feedback on their work, which can be very rewarding and help maintain focus on the task at hand.

    Continuous Refinement:
        The iterative nature of the PD2HCT allows for ongoing improvement, aligning well with the ADHD trait of enjoying new challenges and the stimulation that comes with refining and improving systems.

    Diverse Working Styles:

    PD2HCT’s adaptability supports the varied working styles of ADHD developers, allowing them to leverage their strengths like hyperfocus and rapid ideation, while also providing structure to manage less focused periods.

For Managers:

    Interface Writing and Testing:
        Managers can facilitate the creation of interfaces and testing frameworks that developers with different cognitive styles can all contribute to. This also helps in creating a common language for the team, reducing miscommunication and ensuring that everyone is on the same page.

    Cohesive and Chain-able Tests:
        By promoting the development of chain-able, dependable tests, managers ensure that each part of the software is verifiable independently, reducing the chance of systemic errors. This approach can prevent the overwhelm of debugging complex interdependencies.

    SMART Goal Planning:
        Managers can break down features into SMART (Specific, Measurable, Achievable, Relevant, Time-bound) goal chunks, making it easier for developers to manage their tasks and for the team to track progress.

    Rigging the Process:
        Managers can 'rig' the development process in favor of their developers by using the PD2HCT pattern to create a predictable and orderly development environment. This includes setting up a consistent routine, clear milestones, and frequent check-ins to keep developers aligned and focused.

    Harnessing ADHD Strengths:
        Managers can allocate tasks in a way that capitalizes on the strengths of ADHD, such as assigning creative problem-solving tasks or tasks requiring bursts of intense focus to those who show a propensity for these skills.

    Creating Redundancy and Flexibility:
        Managers can design the project workflow to allow for some redundancy and flexibility to accommodate the variable performance that can come with ADHD, ensuring that critical paths in the project have backup plans and that deadlines are realistic.

    Team Cohesion Through Interfaces:
        By bringing teams together to work on interface design, managers foster a collaborative environment. Interfaces that are co-designed are more likely to be understood and accepted by all team members, creating a sense of ownership and cohesion.

    Facilitating Parallel Workflows:
        Managers can use the PD2HCT pattern to identify opportunities for parallel workflows, allowing different parts of the team to work independently on different project areas without being blocked by others.

By leveraging the PD2HCT design pattern, managers can create an environment that is both ADHD-friendly for developers and conducive to team cohesion and efficient project management. It allows for leveraging the unique strengths of each team member, while also providing a clear framework for project development and goal attainment.

For Developers, Managers, and Teams:

    Key to maintenance and ongoing refinement, iteration, correction, integration, and improvement of a live software system under use of PD2HCT, it's paramount to continually fold the gathered interface.  That is, the process of converting the detail layer (critical for the realisation and deployment of the software onto real computer systems) to and from the uniform interface with witch the functions, capabilities, and true utility of the software is developed.  This has an ongoing technical component on the developers' and toolchain/compilers' sides, but it also requires total attention of managers pro-&re-actively.  Isolate bugs.  Quarantine design errors to single links and as low PD2HCT nodes as possible.  Compilers need to fold trees of translucent abstractions into flat asset sets on an ongoing bases, keeping clean compilation caches to keep compilation terms low, and thus permit agile(no relation to Agile™) and rapid iterative development.  Master builds also have to rebuild the whole software system to issue optimized release builds for real world deployment.  For this reason, maintaining good code caches autonomously is the job of the compiler — un-/re-/folding translucent abstractions as needed.  The developers have knowledge of only their export interfaces and the export interfaces of adjacent components.  Managers are at fault if any bug, malfunction, or security issue pierces multiple or disjoint links or components.  It's so because their role is to keep teams running.  They call meetings to form, reform, and fix interfaces (and their tests) as needed and on a regular basis.  Bugs should not jump between disjoint interfaces.  Or should do so rarely as real software, businesses, and computer systems are messy.  The folding process that is required of the compiler allows developers to fix bugs, add features, remedy security issues, and maintain flexibility and agility both amongst themselves and the living software.