[#BloombergLP-ball-AsyncFileObserver-enableStdoutLoggingPrefix]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/ball.adoc[ball]::xref:BloombergLP/ball/AsyncFileObserver.adoc[AsyncFileObserver]::enableStdoutLoggingPrefix
:relfileprefix: ../../../
:mrdocs:

Enable this async file observer to use the long output format when logging to `stdout`. Henceforth, this async file observer will use the output format for `stdout` logging that was set by the most recent call to `setLogFormat`, or the default long output format ("n%d %p:%t %s %f:%l %c %m %un") if `setLogFormat` has not yet been called. This method has no effect if the long output format for `stdout` logging is already enabled. Note that this method affects records subsequently received through the `publish` method as well as those that are currently on the queue.

== Synopsis

Declared in `<ball_asyncfileobserver.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
enableStdoutLoggingPrefix();
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