cv::FileNodeIterator クラス

used to iterate through sequences and mappings. [詳解]

#include <persistence.hpp>

公開メンバ関数
	FileNodeIterator ()
	The constructors. [詳解]
	FileNodeIterator (const FileNode &node, bool seekEnd)
	FileNodeIterator (const FileNodeIterator &it)
FileNodeIterator &	operator= (const FileNodeIterator &it)
FileNode	operator* () const
	returns the currently observed element
FileNodeIterator &	operator++ ()
	moves iterator to the next node
FileNodeIterator	operator++ (int)
	moves iterator to the next node
FileNodeIterator &	operator+= (int ofs)
	moves iterator forward by the specified offset (possibly negative)
FileNodeIterator &	readRaw (const String &fmt, void *vec, size_t len=(size_t) INT_MAX)
	Reads node elements to the buffer with the specified format. [詳解]
size_t	remaining () const
	returns the number of remaining (not read yet) elements
bool	equalTo (const FileNodeIterator &it) const

限定公開変数類
FileStorage::Impl *	fs
size_t	blockIdx
size_t	ofs
size_t	blockSize
size_t	nodeNElems
size_t	idx

関連関数
（これらはメソッドではありません）
template<typename _Tp >
static FileNodeIterator &	operator>> (FileNodeIterator &it, _Tp &value)
	Reads data from a file storage.
template<typename _Tp >
static FileNodeIterator &	operator>> (FileNodeIterator &it, std::vector< _Tp > &vec)
	Reads data from a file storage.
CV_EXPORTS bool	operator== (const FileNodeIterator &it1, const FileNodeIterator &it2)
CV_EXPORTS bool	operator!= (const FileNodeIterator &it1, const FileNodeIterator &it2)
static ptrdiff_t	operator- (const FileNodeIterator &it1, const FileNodeIterator &it2)
static bool	operator< (const FileNodeIterator &it1, const FileNodeIterator &it2)

詳解

used to iterate through sequences and mappings.

A standard STL notation, with node.begin(), node.end() denoting the beginning and the end of a sequence, stored in node. See the data reading sample in the beginning of the section.

構築子と解体子

FileNodeIterator() [1/3]

cv::FileNodeIterator::FileNodeIterator

(

)

The constructors.

These constructors are used to create a default iterator, set it to specific element in a file node or construct it from another iterator.

FileNodeIterator() [2/3]

cv::FileNodeIterator::FileNodeIterator	(	const FileNode &	node,
		bool	seekEnd
	)

これはオーバーロードされたメンバ関数です。利便性のために用意されています。元の関数との違いは引き数のみです。

引数

node	File node - the collection to iterate over; it can be a scalar (equivalent to 1-element collection) or "none" (equivalent to empty collection).
seekEnd	- true if iterator needs to be set after the last element of the node; that is: node.begin() => FileNodeIterator(node, false) node.end() => FileNodeIterator(node, true)

FileNodeIterator() [3/3]

cv::FileNodeIterator::FileNodeIterator

(

const FileNodeIterator &

it

)

これはオーバーロードされたメンバ関数です。利便性のために用意されています。元の関数との違いは引き数のみです。

引数

it	Iterator to be used as initialization for the created iterator.

関数詳解

readRaw()

FileNodeIterator & cv::FileNodeIterator::readRaw	(	const String &	fmt,
		void *	vec,
		size_t	len = (size_t) INT_MAX
	)

Reads node elements to the buffer with the specified format.

Usually it is more convenient to use operator >> instead of this method.

引数

fmt	Specification of each array element. See format specification
vec	Pointer to the destination array.
len	Number of bytes to read (buffer size limit). If it is greater than number of remaining elements then all of them will be read.

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このクラス詳解は次のファイルから抽出されました:

• persistence.hpp