OpenCV
4.0.0
Open Source Computer Vision
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used to iterate through sequences and mappings. More...
#include "persistence.hpp"
Public Member Functions | |
FileNodeIterator () | |
The constructors. More... | |
FileNodeIterator (const FileNode &node, bool seekEnd) | |
FileNodeIterator (const FileNodeIterator &it) | |
bool | equalTo (const FileNodeIterator &it) const |
FileNode | operator* () const |
returns the currently observed element More... | |
FileNodeIterator & | operator++ () |
moves iterator to the next node More... | |
FileNodeIterator | operator++ (int) |
moves iterator to the next node More... | |
FileNodeIterator & | operator+= (int ofs) |
moves iterator forward by the specified offset (possibly negative) More... | |
FileNodeIterator & | readRaw (const String &fmt, void *vec, size_t maxCount=(size_t) INT_MAX) |
Reads node elements to the buffer with the specified format. More... | |
size_t | remaining () const |
returns the number of remaining (not read yet) elements More... | |
Protected Attributes | |
size_t | blockIdx |
size_t | blockSize |
const FileStorage * | fs |
size_t | idx |
size_t | nodeNElems |
size_t | ofs |
Related Functions | |
(Note that these are not member functions.) | |
template<typename _Tp > | |
static FileNodeIterator & | operator>> (FileNodeIterator &it, _Tp &value) |
Reads data from a file storage. More... | |
template<typename _Tp > | |
static FileNodeIterator & | operator>> (FileNodeIterator &it, std::vector< _Tp > &vec) |
Reads data from a file storage. More... | |
bool | operator== (const FileNodeIterator &it1, const FileNodeIterator &it2) |
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) |
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.
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.
cv::FileNodeIterator::FileNodeIterator | ( | const FileNode & | node, |
bool | seekEnd | ||
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This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
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) |
cv::FileNodeIterator::FileNodeIterator | ( | const FileNodeIterator & | it | ) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
it | Iterator to be used as initialization for the created iterator. |
bool cv::FileNodeIterator::equalTo | ( | const FileNodeIterator & | it | ) | const |
FileNode cv::FileNodeIterator::operator* | ( | ) | const |
returns the currently observed element
FileNodeIterator& cv::FileNodeIterator::operator++ | ( | ) |
moves iterator to the next node
FileNodeIterator cv::FileNodeIterator::operator++ | ( | int | ) |
moves iterator to the next node
FileNodeIterator& cv::FileNodeIterator::operator+= | ( | int | ofs | ) |
moves iterator forward by the specified offset (possibly negative)
FileNodeIterator& cv::FileNodeIterator::readRaw | ( | const String & | fmt, |
void * | vec, | ||
size_t | maxCount = (size_t) INT_MAX |
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Reads node elements to the buffer with the specified format.
Usually it is more convenient to use operator >>
instead of this method.
fmt | Specification of each array element. See format specification |
vec | Pointer to the destination array. |
maxCount | Number of elements to read. If it is greater than number of remaining elements then all of them will be read. |
size_t cv::FileNodeIterator::remaining | ( | ) | const |
returns the number of remaining (not read yet) elements
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Reads data from a file storage.
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Reads data from a file storage.
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