bsl::basic_stringbuf::underflow

Return the character at the current get position, if any.

Synopsis

Declared in <bslstl_stringbuf.h>

virtual
basic_stringbuf<CHAR_TYPE, CHAR_TRAITS, ALLOCATOR>::int_type
underflow();

Description

Update the end of the input area, egptr, if additional characters are available (as may occur if additional characters have been written to the string buffer). Note that this operation is similar to uflow, but does not advance the current input position.

Return Value

the current input character, or traits_type::eof()