Propose a host-neutral application contract — Flash-check repair

PART I

Warm-up

Reconnect with a useful idea before starting propose a host-neutral application contract. In one or two sentences, describe the input, output or host boundary from the previous exercise that this lesson builds on. If you are arriving directly, skim the worked example first; there is no locked prerequisite.

A rough note is enough. You can revise it after the example.

PART II

Instruction & guided example

Repair a brief that confuses host-neutral with host-free

A host-neutral application contract describes user goals, supplied data, services, permissions, lifetime and evidence before choosing environment-specific integrations. The source’s Application constructor and app.ready callback are illustrative host inputs, not builtins supplied by this school. A Willow learner can reuse precise state reasoning while keeping proposed .ws and conceptual native services distinct from implemented .w.

The broken brief says “run anywhere without a native service because Application is in the language.” The sample repair says: application purpose and data contracts are host-neutral; concrete construction, window lifecycle and service access require a compatible supplied host; the public artifact is an unexecuted .ws design. This preserves portability as a goal without erasing dependencies.

Do not replace the native host with browser DOM code while claiming the same source implementation. WUIX is a conceptual native UI service. A different frontend could implement similar user goals, but it would need its own explicit contract and evidence.

Worked reasoning and supplied artifact

// Worked contract artifact:
// The broken brief says “run anywhere without a native service because Application is in the language.” The sample repair says: application purpose and data contracts are host-neutral; concrete construction, window lifecycle and service access require a compatible supplied host; the public artifact is an unexecuted .ws design. This preserves portability as a goal without erasing dependencies.

Illustrative example from the proposed WillowScript design. The language and WUIX/WMATH/WDB/WAUDIO/WTMP services are not implemented in the supplied source. This site has no interpreter, VM or native host and does not execute or certify the snippet.

Try the guided change

Underline each unsupported runtime assumption in the broken brief and replace it with a concrete host requirement.

• Write the supplied inputs and initial state before following the example.
• Reconstruct each intermediate calculation or host decision, then compare with the worked artifact.
• Explain why the contrasting alternative fails before attempting the changed inputs in Part IV.

PART III

Take a breather

Step back after the guided example. Look away from the screen, stretch, or reread your prediction. This is an optional learning pause, not a timer or an assessment gate.

When you return, try to name the lesson’s key idea without copying its wording. If that feels difficult, return to Part II and trace one line rather than restarting the entire lesson.

PART IV

Independent practice

Project context: Independent WillowScript application. Build a small, understandable change around propose a host-neutral application contract.

Repair a proposal claiming a kit planner automatically runs in every game engine. Specify the engine-provided integration points and keep the feature’s user/data contract independent of those implementations.

What to produce

A corrected portability statement and host adaptation checklist without an invented universal runtime.

• State the intended behavior in a sentence before editing.
• Use only source-backed syntax and the host services whose contract you have been given.
• Record a normal case and a boundary or unavailable-resource case.
• Label hand predictions separately from anything actually measured in a supplied toolchain.

Syntax colors are a reading aid, not a compiler. The line you are editing stays uncolored until you move to a different line; capitalization is never changed. Drafts stay on this browser and code is not executed.

import wuix.widget;
import app;
domain Workspace {
    const application = Application({
        name: "Workspace",
        window: { title: "Dashboard", size: [1280, 800] },
        events: {
            "app.ready": fnc() -> void { console.log("Ready"); }
        }
    });
}

PART V

Self-check

Use this check to notice what to revisit. It does not award a private course grade, block another page or claim to verify compiled code. Every answer has a learning explanation.

You may keep exploring even if you are unsure. Use the hint, compare the trace, and revise your explanation.

PART VI

Recap & small task

Bring the idea back to the mod feature you are building. A useful recap connects the mechanism to a decision you can make in your own code.

• Repair a brief that confuses host-neutral with host-free
• Underline each unsupported runtime assumption in the broken brief and replace it with a concrete host requirement.
• Separate source-backed behavior, host requirements and untested predictions.

One small recap task

Underline each unsupported runtime assumption in the broken brief and replace it with a concrete host requirement.

This marks your personal practice record only. It is not a certification or an official workspace assessment.