Enum datafusion_expr::TypeSignature
source · [−]pub enum TypeSignature {
Variadic(Vec<DataType>),
VariadicEqual,
Uniform(usize, Vec<DataType>),
Exact(Vec<DataType>),
Any(usize),
OneOf(Vec<TypeSignature>),
}
Expand description
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
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
Exact(Vec<DataType>)
exact number of arguments of an exact type
Any(usize)
fixed number of arguments of arbitrary types
OneOf(Vec<TypeSignature>)
One of a list of signatures
Trait Implementations
sourceimpl Clone for TypeSignature
impl Clone for TypeSignature
sourcefn clone(&self) -> TypeSignature
fn clone(&self) -> TypeSignature
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for TypeSignature
impl Debug for TypeSignature
sourceimpl Hash for TypeSignature
impl Hash for TypeSignature
sourceimpl PartialEq<TypeSignature> for TypeSignature
impl PartialEq<TypeSignature> for TypeSignature
sourcefn eq(&self, other: &TypeSignature) -> bool
fn eq(&self, other: &TypeSignature) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &TypeSignature) -> bool
fn ne(&self, other: &TypeSignature) -> bool
This method tests for !=
.
impl StructuralPartialEq for TypeSignature
Auto Trait Implementations
impl RefUnwindSafe for TypeSignature
impl Send for TypeSignature
impl Sync for TypeSignature
impl Unpin for TypeSignature
impl UnwindSafe for TypeSignature
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more