unicons::is_surrogate#include <unicode_traits.hpp>template <class InputIt>
bool is_surrogate(InputIt first, InputIt last) noexceptChecks if the character is a UTF-16 surrogate value in the range 0xDC00 to 0xDFFF inclusive.
| Parameter | Description |
|---|---|
| first, last | Input iterators that demarcate the range of characters. The character type may be any integral type, signed or unsigned, with size in bits of 8, 16 or 32. |
The source encoding scheme is assumed to be one-to-one with the character width, UTF-8 with 8 bit characters, UTF-16 with 16 bit characters, and UTF-32 with 32 bit characters. If the source contains characters that are illegal in that encoding scheme, an error code will be returned.
true if the character is a UTF-16 surrogate value, false otherwise.