[#CDiskBlockIndex-2constructor-07]
= xref:CDiskBlockIndex.adoc[CDiskBlockIndex]::CDiskBlockIndex
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Constructors

== Synopses

Declared in `<chain.h>`

Constructs an empty disk block index with a null predecessor hash.


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Constructs a disk block index from an in‐memory block index entry.


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explicit
xref:CDiskBlockIndex/2constructor-06.adoc[CDiskBlockIndex](xref:CBlockIndex.adoc[CBlockIndex] const* pindex);
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== Parameters

[cols="1,4"]
|===
| Name| Description
| *pindex*
| The block index entry to copy, whose predecessor hash is captured.
|===


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