[#BloombergLP-bslx-ByteOutStream-isValid] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslx.adoc[bslx]::xref:BloombergLP/bslx/ByteOutStream.adoc[ByteOutStream]::isValid :relfileprefix: ../../../ :mrdocs: Return `true` if this stream is valid, and `false` otherwise. An invalid stream is a stream for which an output operation was detected to have failed or `invalidate` was called. == Synopsis Declared in `<bslx_byteoutstream.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- bool isValid() const; ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#