OpenCV  3.4.6
Open Source Computer Vision
Public Types | Public Member Functions | Static Public Attributes | Friends | List of all members
cv::String Class Reference
Core functionality » Basic structures

#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)
 

Detailed Description

Examples:
samples/cpp/connected_components.cpp, samples/cpp/create_mask.cpp, samples/cpp/falsecolor.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

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:
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