[#cluster_linearize-DepGraph-2constructor-08]
= xref:cluster_linearize.adoc[cluster_linearize]::xref:cluster_linearize/DepGraph.adoc[DepGraph]::DepGraph
:relfileprefix: ../../
:mrdocs:

Constructors

== Synopses

Declared in `<cluster_linearize.h>`

Construct an empty graph.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:cluster_linearize/DepGraph/2constructor-07.adoc[DepGraph]() noexcept = default;
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[.small]#xref:cluster_linearize/DepGraph/2constructor-07.adoc[_» more..._]#

Copy‐construct a graph.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:cluster_linearize/DepGraph/2constructor-0517.adoc[DepGraph](xref:cluster_linearize/DepGraph.adoc[DepGraph] const& other) noexcept = default;
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[.small]#xref:cluster_linearize/DepGraph/2constructor-0517.adoc[_» more..._]#

Move‐construct a graph.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:cluster_linearize/DepGraph/2constructor-051d.adoc[DepGraph](xref:cluster_linearize/DepGraph.adoc[DepGraph]&& other) noexcept = default;
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[.small]#xref:cluster_linearize/DepGraph/2constructor-051d.adoc[_» more..._]#

Construct a DepGraph object given another DepGraph and a mapping from old to new.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:cluster_linearize/DepGraph/2constructor-0c.adoc[DepGraph](
    xref:cluster_linearize/DepGraph.adoc[DepGraph<SetType>] const& depgraph,
    std::span<DepGraphIndex const> mapping,
    xref:cluster_linearize/DepGraphIndex.adoc[DepGraphIndex] pos_range) noexcept;
----

[.small]#xref:cluster_linearize/DepGraph/2constructor-0c.adoc[_» more..._]#

== Parameters

[cols="1,4"]
|===
| Name| Description
| *other*
| The graph to copy from.
| *depgraph*
| The original DepGraph that is being remapped.
| *mapping*
| A span such that mapping[i]gives the position in the new DepGraph for position i in the old depgraph. Its size must be equal to depgraph.PositionRange(). The value of mapping[i]is ignored if position i is a hole in depgraph (i.e., if !depgraph.Positions()[i]).
| *pos_range*
| The PositionRange() for the new DepGraph. It must equal the largest value in mapping for any used position in depgraph plus 1, or 0 if depgraph.TxCount() == 0.
|===


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