std::operator+(std::basic_string)

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

Stringhe libreria

Null-stringhe terminate Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Byte stringhe

Multibyte stringhe

Stringhe larghe

Classi Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string

char_traits

 

std::basic_string

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::basic_string

basic_string::operator=

basic_string::assign

basic_string::get_allocator

Elemento accesso Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::at

basic_string::operator[]

basic_string::front (C++11)

basic_string::back (C++11)

basic_string::data

basic_string::c_str

Iteratori Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::begin basic_string::cbegin (C++11)

basic_string::end basic_string::cend (C++11)

basic_string::rbegin basic_string::crbegin (C++11)

basic_string::rend basic_string::crend (C++11)

Capacità Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::empty

basic_string::size

basic_string::length

basic_string::max_size

basic_string::reserve

basic_string::capacity

basic_string::shrink_to_fit (C++11)

Operazioni Original: Operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::clear

basic_string::insert

basic_string::erase

basic_string::push_back

basic_string::pop_back (C++11)

basic_string::append

basic_string::operator+=

basic_string::compare

basic_string::replace

basic_string::substr

basic_string::copy

basic_string::resize

basic_string::swap

Cerca Original: Search The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::find

basic_string::rfind

basic_string::find_first_of

basic_string::find_first_not_of

basic_string::find_last_of

basic_string::find_last_not_of

Costanti Original: Constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string::npos

Non membri funzioni Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

operator+

operator== operator!= operator< operator> operator<= operator>=

swap(std::basic_string)

operator<< operator>>

getline

stoi stol stoll (C++11) (C++11) (C++11)

stoul stoull (C++11) (C++11)

stof stod stold (C++11) (C++11) (C++11)

to_string (C++11)

to_wstring (C++11)

Helper classi Original: Helper classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

hash<std::string> hash<std::wstring> hash<std::u32string> hash<std::u16string> (C++11)

 

template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+(const basic_string<CharT,Traits,Alloc>& lhs,                    const basic_string<CharT,Traits,Alloc>& rhs );	(1)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+(const CharT* lhs,                    const basic_string<CharT,Traits,Alloc>& rhs );	(2)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( CharT lhs,                    const basic_string<CharT,Traits,Alloc>& rhs );	(3)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+(const basic_string<CharT,Traits,Alloc>& lhs,                    const CharT* rhs );	(4)
template<class CharT, class Traits, class Alloc>     basic_string<CharT,Traits,Alloc>         operator+(const basic_string<CharT,Traits,Alloc>& lhs,                    CharT rhs );	(5)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( basic_string<CharT,Traits,Alloc>&& lhs,                    const basic_string<CharT,Traits,Alloc>& rhs );	(6)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+(const basic_string<CharT,Traits,Alloc>& lhs,                    basic_string<CharT,Traits,Alloc>&& rhs );	(7)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( basic_string<CharT,Traits,Alloc>&& lhs,                    basic_string<CharT,Traits,Alloc>&& rhs );	(8)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+(const CharT* lhs,                   basic_string<CharT,Traits,Alloc>&& rhs );	(9)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( CharT lhs,                    basic_string<CharT,Traits,Alloc>&& rhs );	(10)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( basic_string<CharT,Traits,Alloc>&& lhs,                    const CharT* rhs );	(11)	(dal C++11)
template<class CharT, class Traits, class Alloc >     basic_string<CharT,Traits,Alloc>         operator+( basic_string<CharT,Traits,Alloc>&& lhs,                    CharT rhs );	(12)	(dal C++11)

Restituisce una stringa contenente i caratteri da lhs seguito dai personaggi rhs.

Original:

Returns a string containing characters from lhs followed by the characters from rhs.

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Parametri

lhs	-	stringa, carattere, o puntatore al primo carattere di terminazione null array Original: string, character, or pointer to the first character in a null-terminated array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
rhs	-	stringa, carattere, o puntatore al primo carattere di terminazione null array Original: string, character, or pointer to the first character in a null-terminated array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

1) basic_string<CharT,Traits,Alloc>(lhs).append(rhs)

2) basic_string<CharT,Traits,Alloc>(lhs)+ rhs

3) basic_string<CharT,Traits,Alloc>(1,lhs)+ rhs

4) lhs + basic_string<CharT,Traits,Alloc>(rhs)

5) lhs + basic_string<CharT,Traits,Alloc>(1,rhs)

6) std::move(lhs.append(rhs))

7) std::move(rhs.insert(0, lhs))

8) std::move(lhs.append(rhs)) or std::move(rhs.insert(0, lhs))

9) std::move(rhs.insert(0, lhs))

10) std::move(rhs.insert(0, 1, lhs))

11) std::move(lhs.append(rhs))

12) std::move(lhs.append(1, rhs))

Esempio

#include <iostream>#include <string>   int main(){std::string s1 ="Hello";std::string s2 ="world";std::cout<< s1 +' '+ s2 +"!\n";}

Output:

Hello world!

Vedi anche

operator+=	aggiunge caratteri in coda (metodo pubblico)
append	aggiunge caratteri in coda (metodo pubblico)
insert	inserisce caratteri (metodo pubblico)