[#FlatFilePos-IsNull]
= xref:FlatFilePos.adoc[FlatFilePos]::IsNull
:relfileprefix: ../
:mrdocs:

Returns true when the position is null (no file assigned)&period;

== Synopsis

Declared in `&lt;flatfile&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
IsNull() const;
----

== Return Value

true if the file index is &hyphen;1&period;


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