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std::basic_string::starts_with

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Bibliothque de chanes de caractres
Chanes zro terminal
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Null-terminated strings
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Les chanes d'octets
Chaines multi-octets
Les chanes tendues
Classes
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Classes
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basic_string
char_traits
 
std::basic_string
Les fonctions membres
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Member functions
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basic_string::basic_string
basic_string::operator=
basic_string::assign
basic_string::get_allocator
Elment d'accs
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Element access
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basic_string::at
basic_string::operator[]
basic_string::front (C++11)
basic_string::back (C++11)
basic_string::data
basic_string::c_str
Les itrateurs
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Iterators
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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)
Capacit
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Capacity
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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)
Oprations
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Operations
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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
Recherche
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Search
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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
Constantes
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Constants
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basic_string::npos
Tiers fonctions
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Non-member functions
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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)
Classes d'aide
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Helper classes
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hash<std::string>
hash<std::wstring>
hash<std::u32string>
hash<std::u16string>
(C++11)
 
<tbody> </tbody>
bool starts_with(std::basic_string_view<CharT, Traits> x) const noexcept;
(1)
bool starts_with(CharT x) const noexcept;
(2)
bool starts_with(const CharT* x) const;
(3)

Vrifie si la chane de caractres commence par le prfixe donn, o

1) le prfixe est une vue (qui peut tre le rsultat d'une conversion implicite depuis un autre std::basic_string)
2) le prfixe est un unique caractre
3) le prfixe est une chane de caractres -la-C

Toutes les trois surcharges retournent std::basic_string_view<CharT, Traits>(data(), size()).starts_with(x);

Paramtres

x - une squence de caractres ou un seul caractres comparer au dbut de la chane de caractres

Valeur de retour

true si la chane de caractres commence par le prfixe donn, false sinon.

Exemple

Voir aussi

(C++20)
vtrifie si la chaine de caractres se termine par le suffixe donn
(fonction membre publique) [edit]
(C++20)
vrifie si la vue sur chane de caractres commence par le prfixe donn
(fonction membre publique de std::basic_string_view) [edit]
(C++20)
vrifie si la vue sur chane de caractres finit par le suffixe donn
(fonction membre publique de std::basic_string_view) [edit]
compare deux chanes
Original:
compares two strings
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(fonction membre publique) [edit]
renvoie une sous-chane
Original:
returns a substring
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(fonction membre publique) [edit]

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