Enum datafusion::physical_plan::functions::TypeSignature

pub enum TypeSignature {
    Variadic(Vec<DataType>),
    VariadicEqual,
    Uniform(usize, Vec<DataType>),
    Exact(Vec<DataType>),
    Any(usize),
    OneOf(Vec<TypeSignature>),
}

A function’s type signature, which defines the function’s supported argument types.

Variants

Variadic(Vec<DataType>)

arbitrary number of arguments of an common type out of a list of valid types

Tuple Fields of Variadic

0: Vec<DataType>

VariadicEqual

arbitrary number of arguments of an arbitrary but equal type

Uniform(usize, Vec<DataType>)

fixed number of arguments of an arbitrary but equal type out of a list of valid types

Tuple Fields of Uniform

0: usize1: Vec<DataType>

Exact(Vec<DataType>)

exact number of arguments of an exact type

Tuple Fields of Exact

0: Vec<DataType>

Any(usize)

fixed number of arguments of arbitrary types

Tuple Fields of Any

0: usize

OneOf(Vec<TypeSignature>)

One of a list of signatures

Tuple Fields of OneOf

0: Vec<TypeSignature>

Trait Implementations

impl Clone for TypeSignature

fn clone(&self) -> TypeSignature

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TypeSignature

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

Formats the value using the given formatter.

impl PartialEq<TypeSignature> for TypeSignature

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<TypeSignature> for TypeSignature

fn partial_cmp(&self, other: &TypeSignature) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for TypeSignature