In Elektra string-\/keys are preferred. Nevertheless, binary keys, i.\+e. strings with null-\/characters embedded are possible.\hypertarget{doc_help_elektra-values_md_autotoc_md1592}{}\doxysection{A\+B\+S\+E\+N\+T K\+E\+YS}\label{doc_help_elektra-values_md_autotoc_md1592}
Sometimes a key does not exist at all. When using \mbox{\hyperlink{group__keyset_gaa34fc43a081e6b01e4120daa6c112004}{ks\+Lookup()}} you will get a null pointer. In the C++ Binding the null pointer is wrapped in a key. Thus this is also sometimes called {\bfseries{N\+U\+LL K\+E\+YS}}.\hypertarget{doc_help_elektra-values_md_autotoc_md1593}{}\doxysection{N\+U\+L\+L V\+A\+L\+U\+ES}\label{doc_help_elektra-values_md_autotoc_md1593}
Null values are binary values without content. They are the only keys that have the size 0.

Null values are always binary values.\hypertarget{doc_help_elektra-values_md_autotoc_md1594}{}\doxysection{E\+M\+P\+T\+Y V\+A\+L\+U\+ES}\label{doc_help_elektra-values_md_autotoc_md1594}
Empty values point to a string that only contains a null byte.

Empty values are possible for both string and binary values. 