Wrap a block dense extractor in the sparse interface. More...

#include <SparsifiedWrapper.hpp>

Inherits SparseExtractor< oracle_, Value_, Index_ >.

Public Member Functions
	BlockSparsifiedWrapper (std::unique_ptr< DenseExtractor< oracle_, Value_, Index_ > > dense, Index_ block_start, Index_ block_length, const Options &opt)

SparseRange< Value_, Index_ >	fetch (Index_ i, Value_ value_buffer, Index_ index_buffer)

Detailed Description

template<bool oracle_, typename Value_, typename Index_>
class tatami::BlockSparsifiedWrapper< oracle_, Value_, Index_ >

Wrap a block dense extractor in the sparse interface.

This can be used to quickly implement the block sparse extraction methods for a dense Matrix subclass. The dense extraction is performed as usual and every value is treated as a structural non-zero; this wrapper just adds the associated indices to satisfy the sparse extraction interface.

Template Parameters

oracle_	Whether an oracle is involved.
Value_	Type of the matrix values.
Index_	Type of the row/column indices.

Constructor & Destructor Documentation

◆ BlockSparsifiedWrapper()

template<bool oracle_, typename Value_ , typename Index_ >

tatami::BlockSparsifiedWrapper< oracle_, Value_, Index_ >::BlockSparsifiedWrapper	(	std::unique_ptr< DenseExtractor< oracle_, Value_, Index_ > >	dense,
		Index_	block_start,
		Index_	block_length,
		const Options &	opt
	)

inline

Parameters

dense	Instance of a dense extractor for a contiguous block of the non-target dimension. If `oracle_ = true`, this should be an instance of a `MyopicDenseExtractor` subclass; otherwise it should be an `OracularDenseExtractor` instance.
block_start	Start of the block extracted by `dense`. Should be the same as that used to construct `dense`.
block_length	Length of the block extracted by `dense`. Should be the same as that used to construct `dense`.
opt	Options for extraction.

Member Function Documentation

◆ fetch()