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Improve starts_with/ends_with

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Peter Dimov
2021-10-10 17:47:57 +03:00
parent 5d7b469e29
commit 220d4ae0a9
1 changed files with 2 additions and 2 deletions
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4
include/boost/core/string_view.hpp
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@ -592,7 +592,7 @@ public:
BOOST_CONSTEXPR bool starts_with( basic_string_view x ) const BOOST_NOEXCEPT BOOST_CONSTEXPR bool starts_with( basic_string_view x ) const BOOST_NOEXCEPT
{ {
return substr( 0, x.size() ) == x; return size() >= x.size() && traits_type::compare( data(), x.data(), x.size() ) == 0;
} }
BOOST_CONSTEXPR bool starts_with( Ch x ) const BOOST_NOEXCEPT BOOST_CONSTEXPR bool starts_with( Ch x ) const BOOST_NOEXCEPT
@ -609,7 +609,7 @@ public:
BOOST_CONSTEXPR bool ends_with( basic_string_view x ) const BOOST_NOEXCEPT BOOST_CONSTEXPR bool ends_with( basic_string_view x ) const BOOST_NOEXCEPT
{ {
return size() >= x.size() && compare( size() - x.size(), npos, x ) == 0; return size() >= x.size() && traits_type::compare( data() + size() - x.size(), x.data(), x.size() ) == 0;
} }
BOOST_CONSTEXPR bool ends_with( Ch x ) const BOOST_NOEXCEPT BOOST_CONSTEXPR bool ends_with( Ch x ) const BOOST_NOEXCEPT