[#BloombergLP-bdlbb-BlobUtil-copy-09]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlbb.adoc[bdlbb]::xref:BloombergLP/bdlbb/BlobUtil.adoc[BlobUtil]::copy
:relfileprefix: ../../../
:mrdocs:

Copy into the specified `dst` starting at the specified `dstOffset` the specified `length` bytes starting at the specified `srcOffset` in the specified `src`. The behavior is undefined unless `0 <= dstOffset`, `0 <= srcOffset`, `0 <= length`, `dst || 0 == length`, `!dst || dstOffset <= dst‐>length() ‐ length`, and `srcOffset <= src‐>length() ‐ length`. Note that this operation does not require `dst` to have a blob buffer factory in that it does not create or destroy blobs ‐‐ it simply copies data from `src` into `dst`, so `dst` must already have room for `length` bytes of data added at `dstOffset`.

== Synopsis

Declared in `<bdlbb_blobutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
copy(
    xref:BloombergLP/bdlbb/Blob.adoc[Blob]* dst,
    int dstOffset,
    xref:BloombergLP/bdlbb/Blob.adoc[Blob] const& src,
    int srcOffset,
    int length);
----


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