Rosetta Stone · Decision Logic

Color Decision Engine

One decision contract · Multiple languages · Same visible result

Project

Shared comparison problem

Determine one visible color from a fixed ordered set of rules. The programming language changes between implementations, but the input, decision order, behavior, and visible output stay equivalent.

Decision Logic Visual Output Comparative Learning

Comparison Contract

Decision order never changes

Each implementation must evaluate the same priorities in the same order.

01

Technology

Check the technology rule first. A matching technology wins before the later rules are considered.

02

Application

If no technology rule wins, check the application rule.

03

Classification

If neither earlier rule matches, check the classification.

04

Fallback

If nothing else matches, return the shared fallback color.

Implementations

Same project, repeated by language

Baseline

ECMAScript

First implementation. Establish the shared behavior and visible target before repeating the project in TypeScript.

Current Browser
Next

TypeScript

Rebuild the ECMAScript baseline without changing the comparison contract or visual result.

Planned
Next

Angular

Rebuild the Angular baseline without changing the comparison contract or visual result.

Planned
Next

Python

Rebuild the Python baseline without changing the comparison contract or visual result.

Planned
Next

Java Spring

Rebuild the Java Spring baseline without changing the comparison contract or visual result.

Planned
Next

PHP

Rebuild the PHP baseline without changing the comparison contract or visual result.

Planned
Next

C#

Rebuild the C# baseline without changing the comparison contract or visual result.

Planned
Next

Java

Rebuild the Java baseline without changing the comparison contract or visual result.

Planned

Visual Target

Input → decision engine → visible output

Input

Recognizable project values

Use technology, application, and classification values that make it obvious which rule should win.

Output

One visible chosen color

The page should show both the winning rule and the resulting color so the logic is visible rather than hidden in the console.