pub unsafe extern "C" fn CSTL_u16string_append_n(
instance: CSTL_UTF16StringRef,
ptr: *const char16_t,
count: usize,
alloc: *mut CSTL_Alloc,
) -> boolExpand description
Appends the first count characters of the string at ptr to instance.
If the length of the resulting string is greater than CSTL_u16string_max_size()
this function has no effect and returns false, otherwise it returns true.