## Concept OptimallyBuffered

OptimallyBuffered

## Associated types

- category

      boost::iostreams::category_of<O>::type

  フィルタまたはデバイスのカテゴリ

## Notation

O
  A type playing the role of optimally-buffered-type in the OptimallyBuffered concept.
`o`
  Object of type O

## Type expressions

Category tag

  category must be derived from boost::iostreams::optimally_buffered_tag.

## Valid expressions

Name | Expression | Type | Semantics
--- | --- | --- | ---
Optimal buffer size | o.optimal_buffer_size() | std::streamsize | バッファサイズが明確でないとき、確保すべきバッファのサイズを返す。

| 製作著作 © 2006 Takeshi Mouri 製作著作 © 2002, 2003 Trustees of Indiana University. 製作著作 © 2001, 2002 University of Notre Dame.