.. cpp:class:: FSTR::Stream : public IDataSourceStream
Alias: :cpp:type:`FlashMemoryStream`
This is a Sming :cpp:class:`IDataSourceStream` descendant which you can use to stream the contents of any FlashString object. It's especially useful when used with :c:macro:`IMPORT_FSTR`:
IMPORT_FSTR(myLargeFile, PROJECT_DIR "/files/lots-of-stuff.txt"); FSTR::Stream fs(myLargeFile); Serial.println(myLargefile);
Because the data is read in sections, it's not limited by available RAM.
Note
Unless you need myLargeFile to be a global symbol, you'll generally want to use :c:func:`IMPORT_FSTR_LOCAL`.
Like a :cpp:class:`FileStream`, you can also seek randomly within a :cpp:class:`FSTR::Stream`, so you can use it as the basis for an elementary read-only filesystem.
See :doc:`map` for a more useful example.
.. cpp:class:: FSTR::TemplateStream : public TemplateStream
Alias: :cpp:type:`TemplateFlashMemoryStream`
Standard templating stream for tag replacement.