Variable RVersion

Type Declaration

• compare: function

  • compare(this: void, a: string | undefined, b: string | undefined): number

    Compare two R version strings following R's numeric_version scheme: split on . and -, compare numerically, shorter versions padded with zeros (0.4-9 < 0.4.10 < 1.0). Negative/zero/positive for a less than/equal to/greater than b.

    Parameters

    • this: void
    • a: string | undefined
    • b: string | undefined

    Returns number

• highest: function

  • highest(this: void, versions: Iterable<string>): string | undefined

    The highest of some version strings by R's numeric_version order (0.9.0 < 0.10.0); undefined if none.

    Parameters

    • this: void
    • versions: Iterable<string>

    Returns string | undefined

• parse: function

  • parse(this: void, version: string): RVersion | undefined

    Parse an R version string into a SemVer, normalizing R's freer scheme (e.g. 0.4-9). Unlike new SemVer(version) this coerces where needed; the original string is available via .str. Returns undefined (never throws) when the string cannot be coerced to a version at all.

    Parameters

    • this: void
    • version: string

    Returns RVersion | undefined

    See

    RVersion.parseOrZero

• parseOrZero: function

  • parseOrZero(this: void, version: string): RVersion

    Like parse but never undefined: a truly un-coercible version sorts as 0.0.0 while keeping its original string as .str, so it stays usable as a sort key.

    Parameters

    • this: void
    • version: string

    Returns RVersion

    See

    RVersion.parse