Method range

datafusion/expr-common/src/statistics.rs:184–192

Extracts the range of this uncertain quantity, depending on its distribution: - A [`Uniform`] distribution's range is simply its interval. - An [`Exponential`] distribution's range is `[offset, +∞)`. - A [`Gaussian`] distribution's range is unbounded. - A [`Bernoulli`] distribution's range is [`Interval::TRUE_OR_FALSE`], if `p` is neither `0` nor `1`. Otherwise, it is [`Interval::FALSE`] and [`Int

(&self)

    /// - A [`Generic`] distribution is unbounded by default, but more information
    ///   may be present.
    pub fn range(&self) -> Result<Interval> {
        match &self {
            Uniform(u) => Ok(u.range().clone()),
            Exponential(e) => e.range(),
            Gaussian(g) => g.range(),
            Bernoulli(b) => Ok(b.range()),
            Generic(u) => Ok(u.range().clone()),
        }
    }

    /// Returns the data type of the statistical parameters comprising this
    /// distribution.