Create a basic_istringstream object. Use the specified initialString indicating the sequence of characters from which input will be streamed. rdbuf is created using ios_base::in. Optionally specify the allocator used to supply memory. If allocator is not supplied, a default-constructed object of the (template parameter) ALLOCATOR type is used. If the ALLOCATOR argument is of type bsl::allocator (the default), then allocator, if supplied, shall be convertible to bslma::Allocator *. If the ALLOCATOR argument is of type bsl::allocator and allocator is not supplied, the currently installed default allocator will be used to supply memory.
Declared in <bslstl_istringstream.h>
template<class SALLOC>
basic_istringstream(
bsl::basic_string<CHAR_TYPE, CHAR_TRAITS, SALLOC> const& initialString,
allocator_type const& allocator = allocator_type())
requires !bsl::is_same<ALLOCATOR, SALLOC>::value;