Mojo struct
VariadicPack
@register_passable
struct VariadicPack[elt_is_mutable: Bool, //, origin: Origin[elt_is_mutable.value], element_trait: AnyTrait[AnyType], *element_types: element_trait]
A utility class to access variadic pack arguments and provide an API for doing things with them.
Parameters
- elt_is_mutable (
Bool
): True if the elements of the list are mutable for an mut or owned argument pack. - origin (
Origin[elt_is_mutable.value]
): The reference origin of the underlying elements. - element_trait (
AnyTrait[AnyType]
): The trait that each element of the pack conforms to. - *element_types (
element_trait
): The list of types held by the argument pack.
Implemented traits
AnyType
,
Sized
,
UnknownDestructibility
Methods
__del__
__del__(owned self)
Destructor that releases elements if owned.
__getitem__
__getitem__[index: Int](self) -> ref [origin] element_types[index.value]
Return a reference to an element of the pack.
Parameters:
- index (
Int
): The element of the pack to return.
Returns:
A reference to the element. The Pointer's mutability follows the mutability of the pack argument convention.
__len__
static __len__() -> Int
Return the VariadicPack length.
Returns:
The number of elements in the variadic pack.
__len__(self) -> Int
Return the VariadicPack length.
Returns:
The number of elements in the variadic pack.
each
each[func: fn[element_trait]($0) capturing -> None](self)
Apply a function to each element of the pack in order. This applies the specified function (which must be parametric on the element type) to each element of the pack, from the first element to the last, passing in each element as a read-only argument.
Parameters:
- func (
fn[element_trait]($0) capturing -> None
): The function to apply to each element.
each_idx
each_idx[func: fn[Int, element_trait]($1) capturing -> None](self)
Apply a function to each element of the pack in order. This applies the specified function (which must be parametric on the element type) to each element of the pack, from the first element to the last, passing in each element as a read-only argument.
Parameters:
- func (
fn[Int, element_trait]($1) capturing -> None
): The function to apply to each element.
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