versionumero

Versionumero, or version number, is the label assigned to a specific state of a software product, library, or digital asset to distinguish it from other states. It is usually represented as a sequence of non-negative integers separated by dots, for example 1.4.2, and may include additional pre-release and build metadata. The version number communicates the scope of changes and the compatibility guarantees associated with the release.

Common versioning schemes include semantic versioning, date-based versioning, and sequential versioning. Semantic versioning uses a major.minor.patch scheme, with optional pre-release identifiers (such as alpha, beta, rc) and build metadata. A change in the major version signals breaking API changes, a minor version adds backward-compatible functionality, and a patch version fixes bugs. Pre-release versions indicate in-development status and are treated as lower in precedence than the corresponding final release.

Version numbers are used by package managers, installers, continuous integration systems, and documentation to determine compatibility, dependencies, and update availability. They are typically recorded in a manifest file or metadata within the project, such as package.json, pom.xml, or setup.py, and are also announced in release notes. Some projects also maintain a separate internal build number for tracing nightly or automated builds, which may not be visible to end users.

Best practices emphasize consistent, monotonic incrementation, clear policy about what triggers a version bump, and informal conventions for pre-release and build metadata. While useful, version numbers are not a perfect proxy for quality or maturity and should be interpreted alongside release notes and testing results.