[#btck-Iterator-2constructor-0b]
= xref:btck.adoc[btck]::xref:btck/Iterator.adoc[Iterator]::Iterator
:relfileprefix: ../../
:mrdocs:

Constructs an iterator to a specific index of `ptr.`

== Synopsis

Declared in `<kernel/bitcoinkernel_wrapper.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
Iterator(
    Collection const* ptr,
    size_t idx);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ptr*
| The collection to iterate over.
| *idx*
| The starting index.
|===


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