The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
std::strong_equality – std::strong_equality Synopsis Defined in header <compare> class strong_equality; (since C++20) The class type std::strong_equality is the result type of a three-way_comparison that * admits only equality and inequality comparisons (no less-than/greater-than) * implies substitutability: if a is equivalent to b, f(a) is also equivalent to f(b), where f denotes a function that reads…
std::strong_equal – std::strong_equal Synopsis Defined in header<compare> template <class T> (since C++ 20) constexpr std::strong_equality strong_equal(const T &a, const T &b); Compares two values using 3-way comparison and produces a result of type std::strong_equality Specifically, * If the expression a <=> b is well-formed and its result is convertible to std::strong_equality, returns that result. *…
std::strncpy – std::strncpy Synopsis Defined in header<cstring> char *strncpy(char *dest, const char *src, std::size_t count); Copies at most count characters of the byte string pointed to by src (including the terminating null character) to character array pointed to by dest. If count is reached before the entire string src was copied, the resulting character array…
std::strncmp – std::strncmp Synopsis Defined in header<cstring> int strncmp(const char *lhs, const char *rhs, size_t count); Compares at most count characters of two null-terminated byte strings. The comparison is done lexicographically. The sign of the result is the sign of the difference between the values of the first pair of characters (both interpreted as unsigned…
std::strncat – std::strncat Synopsis Defined in header<cstring> char *strncat(char *dest, const char *src, std::size_t count); Appends a byte string pointed to by src to a byte string pointed to by dest. At most count characters are copied. The resulting byte string is null-terminated. The destination byte string must have enough space for the contents of…
std::strlen – std::strlen Synopsis Defined in header<cstring> std::size_t strlen(const char *str); Returns the length of the given byte string, that is, the number of characters in a character array whose first element is pointed to by str up to and not including the first null character. The behavior is undefined if there is no null…
std::basic_stringstream::swap – std::basic_stringstream::swap Synopsis void swap(basic_stringstream &other); (since C++ 11) Exchanges the state of the stream with those of other. This is done by callingbasic_iostream<CharT, Traits>::swap(other) and rdbuf()->swap(*other.rdbuf()). Parameters other – stream to exchange the state with Return value (none) Example This section is incomplete Reason: no example See also operator= moves the string stream…
std::basic_stringstream::rdbuf – std::basic_stringstream::rdbuf Synopsis std::basic_stringbuf<CharT, Traits, Allocator> *rdbuf() const; Returns pointer to the underlying raw string device object. Parameters (none) Return value Pointer to the underlying raw string device. Example This section is incomplete Reason: no example
std::basic_stringstream::operator= – std::basic_stringstream::operator= Synopsis basic_stringstream& operator=( basic_stringstream&& other ); (since C++11) Move assigns the string stream other to *this, effectively move-assigning both the std::basic_iostream base class and the associated std::basic_stringbuf. Note that the base class move assignment swaps all stream state variables (except for rdbuf) between *this and other. Parameters other – string stream to…
std::basic_stringstream – std::basic_stringstream Synopsis Defined in header <sstream> template< class CharT, (until C++11) class Traits = std::char_traits<CharT> > class basic_stringstream; template< class CharT, class Traits = std::char_traits<CharT>, (since C++11) class Allocator = std::allocator<CharT> > class basic_stringstream; The class template std::basic_stringstream implements input/output operations on memory (std::basic_string) based streams. It essentially wraps a raw string device…
std::basic_stringbuf – std::basic_stringbuf Synopsis Defined in header <sstream> template< class CharT, class Traits = std::char_traits<CharT>, class Allocator = std::allocator<CharT> > class basic_stringbuf : public std::basic_streambuf<CharT, Traits> std::basic_stringbuf is a std::basic_streambuf whose associated character sequence is a memory-resident sequence of arbitrary characters, which can be initialized from or made available as an instance of std::basic_string. Typical…
std::basic_string – std::basic_string Synopsis Defined in header <string> template< class CharT, class Traits = std::char_traits<CharT>, (1) class Allocator = std::allocator<CharT> > class basic_string; namespace pmr { template <class CharT, class Traits = std::char_traits<CharT>> using basic_string = std::basic_string< CharT, Traits, (2) (since C++17) std::polymorphic_allocator<CharT>> } The class template basic_string stores and manipulates sequences of char-like objects,…
std::strftime – std::strftime Synopsis Defined in header<ctime> std::size_t strftime(char *str, std::size_t count, const char *format, const std::tm *time); Converts the date and time information from a given calendar time time to a null-terminated multibyte character string str according to format string format. Up to count bytes are written. Parameters str – pointer to the first…
std::strerror – std::strerror Synopsis Defined in header<cstring> char *strerror(int errnum); Returns a pointer to the textual description of the system error code errnum, identical to the description that would be printed by std::perror(). errnum is usually acquired from the errno variable, however the function accepts any value of type int. The contents of the string…
std::streamsize – std::streamsize Synopsis Defined in header <ios> typedef /*unspecified*/ streamsize; The type std::streamsize is a signed integral type used to represent the number of characters transferred in an I/O operation or the size of an I/O buffer. It is used as a signed counterpart of std::size_t, similar to the POSIX type ssize_t. Except in…
std::streamoff – std::streamoff Synopsis Defined in header <ios> typedef /*unspecified*/ streamoff; The type std::streamoff is a signed integral type of sufficient size to represent the maximum possible file size supported by the operating system. Typically, this is a typedef to long long. It is used to represent offsets from stream positions (values of type std::fpos)….
std::basic_streambuf – std::basic_streambuf Synopsis Defined in header <streambuf> template< class CharT, class Traits = std::char_traits<CharT> > class basic_streambuf; The class basic_streambuf controls input and output to a character sequence. It includes and provides access to 1) The controlled character sequence, also called the buffer, which may contain input sequence (also called get area) for buffering…
std::strcspn – std::strcspn Synopsis Defined in header<cstring> size_t strcspn(const char *dest, const char *src); Returns the length of the maximum initial segment of the byte string pointed to by dest, that consists of only the characters not found in byte string pointed to by src. The function name stands for "complementary span" Parameters dest –…
std::strcpy – std::strcpy Synopsis Defined in header<cstring> char *strcpy(char *dest, const char *src); Copies the character string pointed to by src, including the null terminator, to the character array whose first element is pointed to by dest. The behavior is undefined if the dest array is not large enough. The behavior is undefined if the…
std::strcoll – std::strcoll Synopsis Defined in header<cstring> int strcoll(const char *lhs, const char *rhs); Compares two null-terminated byte strings according to the current locale as defined by the LC_COLLATE category. Parameters lhs, rhs – pointers to the null-terminated byte strings to compare Return value Negative value if lhs is less than (precedes) rhs. 0 if…