[#BloombergLP-bdlbb-Blob-replaceDataBuffer]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlbb.adoc[bdlbb]::xref:BloombergLP/bdlbb/Blob.adoc[Blob]::replaceDataBuffer
:relfileprefix: ../../../
:mrdocs:

Replace the data buffer at the specified `index` with the specified `buffer`. The behavior is undefined unless `0 <= index < numDataBuffers()` and the total size of the resulting blob does not exceed `INT_MAX`. Note that this operation is equivalent to: ` blob.removeBuffer(index); const int n = blob.length(); blob.insertBuffer(index, buffer); blob.setLength(n + buffer.size()); ` but is more efficient.

== Synopsis

Declared in `<bdlbb_blob.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
replaceDataBuffer(
    int index,
    xref:BloombergLP/bdlbb/BlobBuffer.adoc[BlobBuffer] const& buffer);
----


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