Enum calc_lib::O

pub enum O<'a> {
    Empty(&'a Option<Ratio<BigInt>>),
    Exit,
    Eval(&'a Ratio<BigInt>),
    Store(&'a Option<Ratio<BigInt>>),
}

A successful evaluation of an input.

Variants

Empty(&'a Option<Ratio<BigInt>>)

The input only contained whitespace. This returns the previous Eval. It is None iff there have been no previous Eval results.

Exit

The quit expression was issued to terminate the program.

Eval(&'a Ratio<BigInt>)

Result of a “normal” expression.

Store(&'a Option<Ratio<BigInt>>)

The store expression stores and returns the previous Eval. It is None iff there have been no previous Eval results.

Trait Implementations

impl<'a> Debug for O<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Display for O<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.