Enum DType 

pub enum DType {
    Bool,
    I64,
    Ext,
    Rat,
    F64,
    Complex,
    Char,
    Box,
}

Variants

Bool

I64

Ext

An arbitrary-precision integer (J’s “extended”, 123x).

Rat

An exact ratio of two arbitrary-precision integers (J 1r3).

F64

Complex

A complex number, held as an interleaved [re, im] pair.

Char

Box

A box: every element is itself an array (J <, APL ⊂).

Implementations

impl DType

pub fn name(self) -> &'static str

pub fn is_numeric(self) -> bool

pub fn is_exact(self) -> bool

True for the two types that never round.

pub fn promote(a: DType, b: DType) -> Option<DType>

Common type two numeric operands widen to. None if incompatible.

The order is J’s numeric tower: an exact type sits above the machine integers and below the floats, so 1x + 1r2 stays exact while 1x + 1.5 rounds.

Trait Implementations

impl Clone for DType

fn clone(&self) -> DType

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for DType

impl Debug for DType

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

Formats the value using the given formatter.

impl Eq for DType

impl PartialEq for DType

fn eq(&self, other: &DType) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for DType