Deduce the template parameter CHAR_TYPE from the parameters passed to the constructor of basic_string. This deduction guide does not participate unless the specified ALLOC is convertible to bsl::allocator<CHAR_TYPE>.

Synopsis

Declared in <bslstl_string.h>

template<
    class CHAR_TYPE,
    class ALLOC,
    class DEFAULT_ALLOCATOR = bsl::allocator<CHAR_TYPE>>
requires bsl::is_convertible_v<ALLOC *, DEFAULT_ALLOCATOR>
basic_string<CHAR_TYPE>(
    CHAR_TYPE const*,
    ALLOC*) → basic_string<CHAR_TYPE>;

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