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Languages & runtimes · #ceylon
A decision guide comparing Ceylon immutable classes, Java records, and manual POJOs for domain models, with a working Ceylon example and validation steps.
A step‑by‑step diagnostic guide for fixing Ceylon module dependency resolution failures such as missing modules, version conflicts, missing descriptors, circular dependencies, and JVM incompatibilities.
Learn how to use Ceylon's nullable types and the exists guard to eliminate NullPointerExceptions through compile-time type narrowing.
When Ceylon reports a "cannot resolve module" error, the culprit is usually a missing or mismatched module descriptor, a bad module path, or version conflict. This guide walks you through the symptoms, a concise cause table, step‑by‑step checks, and targeted fixes—plus when to ask for help.
Learn how to diagnose and fix ClassNotFoundException and NoClassDefFoundError in Ceylon JVM applications by verifying runtime dependencies and version alignment.
Discover how Ceylon's union and intersection types eliminate null-pointer risks and interface bloat in JVM projects through first-class type composition.
When you upgrade or downgrade a Ceylon installation, you need to consider its modular distribution layout, platform dependencies, and the fact that the official repository is archived. What are the recommended steps to perform a safe upgrade (or rollback) of a Ceylon installation, including: Prerequisites (Java version, system compatibility) Downloading and
Goal: Determine if Ceylon modules can interoperate with JPMS without violating JPMS split-package prohibition, given Ceylon's shared package feature allows the same package to appear in multiple modules. Constraints: Ceylon's module descriptors permit shared packages; JPMS forbids split packages; no official migration path exists; Ceylon reached end-of-life
Ceylon employs a strict module system for dependency resolution and versioning that differs from the standard Java classpath mechanism. While projects typically resolve dependencies successfully during local development using the Ceylon compiler's integrated tooling, discrepancies can arise when deploying the compiled bytecode to a production JVM. The uncert
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