20 Strings library [strings]

20.4 String view classes [string.view]

20.4.2 Class template basic_­string_­view [string.view.template]

20.4.2.1 Construction and assignment [string.view.cons]

constexpr basic_string_view() noexcept;
Effects: Constructs an empty basic_­string_­view.
Ensures: size_­ == 0 and data_­ == nullptr.
constexpr basic_string_view(const charT* str);
Requires: [str, str + traits::length(str)) is a valid range.
Effects: Constructs a basic_­string_­view, with the postconditions in Table 59.
Table 59basic_­string_­view(const charT*) effects
Element
Value
data_­
str
size_­
traits::length(str)
Complexity: .
constexpr basic_string_view(const charT* str, size_type len);
Requires: [str, str + len) is a valid range.
Effects: Constructs a basic_­string_­view, with the postconditions in Table 60.
Table 60basic_­string_­view(const charT*, size_­type) effects
Element
Value
data_­
str
size_­
len