mikera / mikera/vectorz

Support for long indices

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#72 1 comment 0 reactions 0 assignees View on GitHub

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enhancement
Dominant language
Java
Stars
259
Forks
47
PR merge metrics
No merged PRs in 30d

Description

With the new sparse matrix support, we should add support for long-based indexing.

This will also help with Clojure interop for vectorz-clj, since Clojure prefers long values rather than ints for most purposes.

Internal data formats may use either int or long values. ints will offer greater space efficiency and work better as array indices, so should be preferred unless long sizes are required.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the sparse matrix indexing implementation and the vectorz-clj interop boundary, then trace how int-based indices and sizes are represented. Define the affected indexing paths and verify that long-based indexing works where required while int representations remain preferred when sizes permit.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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