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VisitorVTable

vortex_array::vtable

Trait VisitorVTable 

Source 
pub trait VisitorVTable<V: VTable> {
    // Required methods
    fn visit_buffers(array: &V::Array, visitor: &mut dyn ArrayBufferVisitor);
    fn visit_children(array: &V::Array, visitor: &mut dyn ArrayChildVisitor);

    // Provided methods
    fn nbuffers(array: &V::Array) -> usize { ... }
    fn buffer_names(array: &V::Array) -> Vec<String> { ... }
    fn visit_children_unnamed(
        array: &V::Array,
        visitor: &mut dyn ArrayChildVisitorUnnamed,
    ) { ... }
    fn nchildren(array: &V::Array) -> usize { ... }
    fn nth_child(array: &V::Array, idx: usize) -> Option<ArrayRef> { ... }
}

Required Methods§

Source

fn visit_buffers(array: &V::Array, visitor: &mut dyn ArrayBufferVisitor)

Visit the buffers of the array.

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fn visit_children(array: &V::Array, visitor: &mut dyn ArrayChildVisitor)

Visit the children of the array.

Provided Methods§

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fn nbuffers(array: &V::Array) -> usize

Count the number of buffers in the array.

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fn buffer_names(array: &V::Array) -> Vec<String>

Return the names of the buffers in the array.

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fn visit_children_unnamed( array: &V::Array, visitor: &mut dyn ArrayChildVisitorUnnamed, )

Visit the children of the array without names.

This is more efficient than Self::visit_children when you don’t need the child names (e.g., for counting or accessing by index). The default implementation wraps the named visitor, but array types can override this to avoid allocating names.

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fn nchildren(array: &V::Array) -> usize

Count the number of children in the array.

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fn nth_child(array: &V::Array, idx: usize) -> Option<ArrayRef>

Get the nth child of the array without allocating a Vec.

Returns None if the index is out of bounds.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§