cv::String Class Reference

#include <opencv2/core/cvstd.hpp>

Public Types
typedef const char *	const_iterator
typedef const char *	const_pointer
typedef const char &	const_reference
typedef ptrdiff_t	difference_type
typedef char *	iterator
typedef char *	pointer
typedef char &	reference
typedef size_t	size_type
typedef char	value_type

Public Member Functions
	String ()
	String (const String &str)
	String (const String &str, size_t pos, size_t len=npos)
	String (const char *s)
	String (const char *s, size_t n)
	String (size_t n, char c)
	String (const char *first, const char *last)
template<typename Iterator >
	String (Iterator first, Iterator last)
	String (const FileNode &fn)
	String (const std::string &str)
	String (const std::string &str, size_t pos, size_t len=npos)
	~String ()
const char *	begin () const
const char *	c_str () const
void	clear ()
int	compare (const char *s) const
int	compare (const String &str) const
bool	empty () const
const char *	end () const
size_t	find (const char *s, size_t pos, size_t n) const
size_t	find (char c, size_t pos=0) const
size_t	find (const String &str, size_t pos=0) const
size_t	find (const char *s, size_t pos=0) const
size_t	find_first_of (const char *s, size_t pos, size_t n) const
size_t	find_first_of (char c, size_t pos=0) const
size_t	find_first_of (const String &str, size_t pos=0) const
size_t	find_first_of (const char *s, size_t pos=0) const
size_t	find_last_of (const char *s, size_t pos, size_t n) const
size_t	find_last_of (char c, size_t pos=npos) const
size_t	find_last_of (const String &str, size_t pos=npos) const
size_t	find_last_of (const char *s, size_t pos=npos) const
size_t	length () const
	operator std::string () const
String &	operator+= (const String &str)
String &	operator+= (const char *s)
String &	operator+= (char c)
String &	operator+= (const std::string &str)
String &	operator= (const String &str)
String &	operator= (const char *s)
String &	operator= (char c)
String &	operator= (const std::string &str)
char	operator[] (size_t idx) const
char	operator[] (int idx) const
size_t	rfind (const char *s, size_t pos, size_t n) const
size_t	rfind (char c, size_t pos=npos) const
size_t	rfind (const String &str, size_t pos=npos) const
size_t	rfind (const char *s, size_t pos=npos) const
size_t	size () const
String	substr (size_t pos=0, size_t len=npos) const
void	swap (String &str)
String	toLowerCase () const

Static Public Attributes
static const size_t	npos = size_t(-1)

Friends
String	operator+ (const String &lhs, const String &rhs)
String	operator+ (const String &lhs, const char *rhs)
String	operator+ (const char *lhs, const String &rhs)
String	operator+ (const String &lhs, char rhs)
String	operator+ (char lhs, const String &rhs)
String	operator+ (const String &lhs, const std::string &rhs)
String	operator+ (const std::string &lhs, const String &rhs)

Related Functions
(Note that these are not member functions.)
String	operator+ (const String &lhs, const String &rhs)
String	operator+ (const String &lhs, const char *rhs)
String	operator+ (const char *lhs, const String &rhs)
String	operator+ (const String &lhs, char rhs)
String	operator+ (char lhs, const String &rhs)
static bool	operator== (const String &lhs, const String &rhs)
static bool	operator== (const char *lhs, const String &rhs)
static bool	operator== (const String &lhs, const char *rhs)
static bool	operator!= (const String &lhs, const String &rhs)
static bool	operator!= (const char *lhs, const String &rhs)
static bool	operator!= (const String &lhs, const char *rhs)
static bool	operator< (const String &lhs, const String &rhs)
static bool	operator< (const char *lhs, const String &rhs)
static bool	operator< (const String &lhs, const char *rhs)
static bool	operator<= (const String &lhs, const String &rhs)
static bool	operator<= (const char *lhs, const String &rhs)
static bool	operator<= (const String &lhs, const char *rhs)
static bool	operator> (const String &lhs, const String &rhs)
static bool	operator> (const char *lhs, const String &rhs)
static bool	operator> (const String &lhs, const char *rhs)
static bool	operator>= (const String &lhs, const String &rhs)
static bool	operator>= (const char *lhs, const String &rhs)
static bool	operator>= (const String &lhs, const char *rhs)
static std::string	toLowerCase (const std::string &str)
static std::string	toUpperCase (const std::string &str)

Detailed Description

Examples:

samples/cpp/connected_components.cpp, samples/cpp/create_mask.cpp, samples/cpp/falsecolor.cpp, samples/cpp/lsd_lines.cpp, samples/cpp/stitching_detailed.cpp, samples/cpp/train_HOG.cpp, samples/cpp/tutorial_code/features2D/Homography/decompose_homography.cpp, samples/cpp/tutorial_code/features2D/Homography/homography_from_camera_displacement.cpp, samples/cpp/tutorial_code/features2D/Homography/pose_from_homography.cpp, samples/cpp/tutorial_code/ImgProc/Morphology_1.cpp, samples/cpp/tutorial_code/ImgProc/Morphology_2.cpp, samples/cpp/tutorial_code/ImgTrans/Sobel_Demo.cpp, samples/cpp/tutorial_code/ml/introduction_to_pca/introduction_to_pca.cpp, samples/cpp/tutorial_code/photo/non_photorealistic_rendering/npr_demo.cpp, samples/cpp/warpPerspective_demo.cpp, samples/dnn/classification.cpp, samples/dnn/object_detection.cpp, samples/dnn/openpose.cpp, samples/dnn/segmentation.cpp, and samples/dnn/text_detection.cpp.

Member Typedef Documentation

const_iterator

typedef const char* cv::String::const_iterator

const_pointer

typedef const char* cv::String::const_pointer

const_reference

typedef const char& cv::String::const_reference

difference_type

typedef ptrdiff_t cv::String::difference_type

iterator

typedef char* cv::String::iterator

pointer

typedef char* cv::String::pointer

reference

typedef char& cv::String::reference

size_type

typedef size_t cv::String::size_type

value_type

typedef char cv::String::value_type

Constructor & Destructor Documentation

String() [1/11]

cv::String::String

(

)

String() [2/11]

cv::String::String

(

const String &

str

)

String() [3/11]

cv::String::String	(	const String &	str,
		size_t	pos,
		size_t	len = npos
	)

String() [4/11]

cv::String::String

(

const char *

s

)

String() [5/11]

cv::String::String	(	const char *	s,
		size_t	n
	)

String() [6/11]

cv::String::String	(	size_t	n,
		char	c
	)

String() [7/11]

cv::String::String	(	const char *	first,
		const char *	last
	)

String() [8/11]

template<typename Iterator >

cv::String::String	(	Iterator	first,
		Iterator	last
	)

String() [9/11]

cv::String::String ( const FileNode &  fn )

explicit

~String()

cv::String::~String

(

)

String() [10/11]

cv::String::String

(

const std::string &

str

)

String() [11/11]

cv::String::String	(	const std::string &	str,
		size_t	pos,
		size_t	len = npos
	)

Member Function Documentation

begin()

const char* cv::String::begin

(

)

const

c_str()

const char* cv::String::c_str

(

)

const

Examples:

samples/cpp/create_mask.cpp, and samples/cpp/tutorial_code/ImgTrans/Sobel_Demo.cpp.

clear()

void cv::String::clear

(

)

compare() [1/2]

int cv::String::compare

(

const char *

s

)

const

Examples:

samples/dnn/openpose.cpp.

compare() [2/2]

int cv::String::compare

(

const String &

str

)

const

empty()

bool cv::String::empty

(

)

const

Examples:

samples/cpp/create_mask.cpp, samples/cpp/train_HOG.cpp, samples/cpp/tutorial_code/ImgTrans/Sobel_Demo.cpp, and samples/dnn/openpose.cpp.

end()

const char* cv::String::end

(

)

const

find() [1/4]

size_t cv::String::find	(	const char *	s,
		size_t	pos,
		size_t	n
	)		const

find() [2/4]

size_t cv::String::find	(	char	c,
		size_t	pos = 0
	)		const

find() [3/4]

size_t cv::String::find	(	const String &	str,
		size_t	pos = 0
	)		const

find() [4/4]

size_t cv::String::find	(	const char *	s,
		size_t	pos = 0
	)		const

find_first_of() [1/4]

size_t cv::String::find_first_of	(	const char *	s,
		size_t	pos,
		size_t	n
	)		const

find_first_of() [2/4]

size_t cv::String::find_first_of	(	char	c,
		size_t	pos = 0
	)		const

find_first_of() [3/4]

size_t cv::String::find_first_of	(	const String &	str,
		size_t	pos = 0
	)		const

find_first_of() [4/4]

size_t cv::String::find_first_of	(	const char *	s,
		size_t	pos = 0
	)		const

find_last_of() [1/4]

size_t cv::String::find_last_of	(	const char *	s,
		size_t	pos,
		size_t	n
	)		const

Examples:

samples/cpp/stitching_detailed.cpp.

find_last_of() [2/4]

size_t cv::String::find_last_of	(	char	c,
		size_t	pos = npos
	)		const

find_last_of() [3/4]

size_t cv::String::find_last_of	(	const String &	str,
		size_t	pos = npos
	)		const

find_last_of() [4/4]

size_t cv::String::find_last_of	(	const char *	s,
		size_t	pos = npos
	)		const

length()

size_t cv::String::length

(

)

const

operator std::string()

cv::String::operator std::string

(

)

const

operator+=() [1/4]

String& cv::String::operator+=

(

const String &

str

)

operator+=() [2/4]

String& cv::String::operator+=

(

const char *

s

)

operator+=() [3/4]

String& cv::String::operator+=

(

char

c

)

operator+=() [4/4]

String& cv::String::operator+=

(

const std::string &

str

)

operator=() [1/4]

String& cv::String::operator=

(

const String &

str

)

operator=() [2/4]

String& cv::String::operator=

(

const char *

s

)

operator=() [3/4]

String& cv::String::operator=

(

char

c

)

operator=() [4/4]

String& cv::String::operator=

(

const std::string &

str

)

operator[]() [1/2]

char cv::String::operator[]

(

size_t

idx

)

const

operator[]() [2/2]

char cv::String::operator[]

(

int

idx

)

const

rfind() [1/4]

size_t cv::String::rfind	(	const char *	s,
		size_t	pos,
		size_t	n
	)		const

rfind() [2/4]

size_t cv::String::rfind	(	char	c,
		size_t	pos = npos
	)		const

rfind() [3/4]

size_t cv::String::rfind	(	const String &	str,
		size_t	pos = npos
	)		const

rfind() [4/4]

size_t cv::String::rfind	(	const char *	s,
		size_t	pos = npos
	)		const

size()

size_t cv::String::size

(

)

const

Examples:

samples/cpp/train_HOG.cpp.

substr()

String cv::String::substr	(	size_t	pos = 0,
		size_t	len = npos
	)		const

Examples:

samples/cpp/stitching_detailed.cpp.

swap()

void cv::String::swap

(

String &

str

)

toLowerCase()

String cv::String::toLowerCase

(

)

const

Friends And Related Function Documentation

operator!=() [1/3]

static bool operator!= ( const String &  lhs, const String &  rhs  )

related

operator!=() [2/3]

static bool operator!= ( const char *  lhs, const String &  rhs  )

related

operator!=() [3/3]

static bool operator!= ( const String &  lhs, const char *  rhs  )

related

operator+ [1/12]

String operator+ ( const String &  lhs, const String &  rhs  )

friend

operator+ [2/12]

String operator+ ( const String &  lhs, const char *  rhs  )

friend

operator+ [3/12]

String operator+ ( const char *  lhs, const String &  rhs  )

friend

operator+ [4/12]

String operator+ ( const String &  lhs, char  rhs  )

friend

operator+ [5/12]

String operator+ ( char  lhs, const String &  rhs  )

friend

operator+ [6/12]

String operator+ ( const String &  lhs, const std::string &  rhs  )

friend

operator+ [7/12]

String operator+ ( const std::string &  lhs, const String &  rhs  )

friend

operator+() [8/12]

String operator+ ( const String &  lhs, const String &  rhs  )

related

operator+() [9/12]

String operator+ ( const String &  lhs, const char *  rhs  )

related

operator+() [10/12]

String operator+ ( const char *  lhs, const String &  rhs  )

related

operator+() [11/12]

String operator+ ( const String &  lhs, char  rhs  )

related

operator+() [12/12]

String operator+ ( char  lhs, const String &  rhs  )

related

operator<() [1/3]

static bool operator< ( const String &  lhs, const String &  rhs  )

related

operator<() [2/3]

static bool operator< ( const char *  lhs, const String &  rhs  )

related

operator<() [3/3]

static bool operator< ( const String &  lhs, const char *  rhs  )

related

operator<=() [1/3]

static bool operator<= ( const String &  lhs, const String &  rhs  )

related

operator<=() [2/3]

static bool operator<= ( const char *  lhs, const String &  rhs  )

related

operator<=() [3/3]

static bool operator<= ( const String &  lhs, const char *  rhs  )

related

operator==() [1/3]

static bool operator== ( const String &  lhs, const String &  rhs  )

related

operator==() [2/3]

static bool operator== ( const char *  lhs, const String &  rhs  )

related

operator==() [3/3]

static bool operator== ( const String &  lhs, const char *  rhs  )

related

operator>() [1/3]

static bool operator> ( const String &  lhs, const String &  rhs  )

related

operator>() [2/3]

static bool operator> ( const char *  lhs, const String &  rhs  )

related

operator>() [3/3]

static bool operator> ( const String &  lhs, const char *  rhs  )

related

operator>=() [1/3]

static bool operator>= ( const String &  lhs, const String &  rhs  )

related

operator>=() [2/3]

static bool operator>= ( const char *  lhs, const String &  rhs  )

related

operator>=() [3/3]

static bool operator>= ( const String &  lhs, const char *  rhs  )

related

toLowerCase()

static std::string toLowerCase ( const std::string &  str )

related

toUpperCase()

static std::string toUpperCase ( const std::string &  str )

related

Member Data Documentation

npos

const size_t cv::String::npos = size_t(-1)

static

---

The documentation for this class was generated from the following file:

• opencv2/core/cvstd.hpp