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Loosen trait constraints and simplify structure for longest_path #1195

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merged 1 commit into from
May 18, 2024

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In the recently merged #1192 a new generic DAG longest_path function was added to rustworkx-core. However, the trait bounds on the function were a bit tighter than they needed to be. The traits were forcing NodeId to be of a NodeIndex type and this wasn't really required. The only requirement that the NodeId type can be put on a hashmap and do a partial compare (that implements Hash, Eq, and PartialOrd). Also the IntoNeighborsDirected wasn't required because it's methods weren't ever used. This commit loosens the traits bounds to facilitate this. At the same time this also simplifies the code structure a bit to reduce the separation of the rust code structure in the rustworkx crate using longest_path().

In the recently merged Qiskit#1192 a new generic DAG longest_path function was
added to rustworkx-core. However, the trait bounds on the function were
a bit tighter than they needed to be. The traits were forcing NodeId to
be of a NodeIndex type and this wasn't really required. The only
requirement that the NodeId type can be put on a hashmap and do a
partial compare (that implements Hash, Eq, and PartialOrd). Also the
IntoNeighborsDirected wasn't required because it's methods weren't ever
used. This commit loosens the traits bounds to facilitate this. At the
same time this also simplifies the code structure a bit to reduce the
separation of the rust code structure in the rustworkx crate using
longest_path().
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Pull Request Test Coverage Report for Build 9133077909

Details

  • 33 of 33 (100.0%) changed or added relevant lines in 2 files are covered.
  • 6 unchanged lines in 1 file lost coverage.
  • Overall coverage decreased (-0.04%) to 96.474%

Files with Coverage Reduction New Missed Lines %
src/shortest_path/all_pairs_bellman_ford.rs 6 95.53%
Totals Coverage Status
Change from base Build 9104623275: -0.04%
Covered Lines: 16744
Relevant Lines: 17356

💛 - Coveralls

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LGTM

@IvanIsCoding IvanIsCoding merged commit 0ec113b into Qiskit:main May 18, 2024
28 checks passed
@mtreinish mtreinish deleted the traits-longest-path branch May 18, 2024 12:05
SILIZ4 pushed a commit to SILIZ4/rustworkx that referenced this pull request May 18, 2024
…kit#1195)

In the recently merged Qiskit#1192 a new generic DAG longest_path function was
added to rustworkx-core. However, the trait bounds on the function were
a bit tighter than they needed to be. The traits were forcing NodeId to
be of a NodeIndex type and this wasn't really required. The only
requirement that the NodeId type can be put on a hashmap and do a
partial compare (that implements Hash, Eq, and PartialOrd). Also the
IntoNeighborsDirected wasn't required because it's methods weren't ever
used. This commit loosens the traits bounds to facilitate this. At the
same time this also simplifies the code structure a bit to reduce the
separation of the rust code structure in the rustworkx crate using
longest_path().
IvanIsCoding added a commit that referenced this pull request May 22, 2024
* add hyperbolic random graph model generator

* Loosen trait constraints and simplify structure for longest_path (#1195)

In the recently merged #1192 a new generic DAG longest_path function was
added to rustworkx-core. However, the trait bounds on the function were
a bit tighter than they needed to be. The traits were forcing NodeId to
be of a NodeIndex type and this wasn't really required. The only
requirement that the NodeId type can be put on a hashmap and do a
partial compare (that implements Hash, Eq, and PartialOrd). Also the
IntoNeighborsDirected wasn't required because it's methods weren't ever
used. This commit loosens the traits bounds to facilitate this. At the
same time this also simplifies the code structure a bit to reduce the
separation of the rust code structure in the rustworkx crate using
longest_path().

* use vector references

* change to slice (clippy)

* generalize to H^D, improve numerical accuracy

* allow infinite coordinate

* handle infinity in hyperbolic distance

* remove unused import (clippy)

* fix python stub

---------

Co-authored-by: Matthew Treinish <mtreinish@kortar.org>
Co-authored-by: Ivan Carvalho <8753214+IvanIsCoding@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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3 participants