[Repo Assist] Monthly Activity 2026-04

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Activity for April 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review PR (new, this run): Add Excel docs page (docs/excel.fsx) + optimise Frame.stack/Frame.unstack — View open Repo Assist PRs
• Check comment [Feature proposal] Variable multi key joining #509: Repo Assist summarised workarounds for non-index joins — View
• Close issue Sample code snippet and introduction for the fslab website #531: fslab website snippet; docs now substantially improved — View
• Review issue [Repo Assist] Epic: Deedle.MicrosoftML integration package #676: MicrosoftML epic — future work remains — View
• Review issue [Repo Assist] Documentation gaps: missing value handling, grouping, Math, Excel, performance benchmarks #684: Documentation gaps — several pages added but excel/interactive docs still open — View

Future Work for Repo Assist

• docs/interactive.fsx — Deedle.Interactive / .NET Interactive notebooks (issue [Repo Assist] Documentation gaps: missing value handling, grouping, Math, Excel, performance benchmarks #684 lower priority)
• Deedle.MicrosoftML: type-hint API, scripting helpers, docs page, NuGet packaging
• Benchmark suite: CI integration
• Update PR number in this issue once the Excel docs PR is assigned a number

Run History

2026-04-05 05:03 UTC — Run

• 📝 Created new Monthly Activity issue (this issue); closed March 2026 issue [Repo Assist] Monthly Activity 2026-03 #584
• 📄 Created PR (new): docs/excel.fsx — cross-platform Excel reading docs (Deedle.Excel.Reader) + Windows live-Excel overview (Deedle.Excel)
• ⚡ Perf: Frame.stack — precompute column/row addresses before nested loop (eliminates O(rows×cols) redundant index lookups)
• ⚡ Perf: Frame.unstack — single-pass key extraction with HashSet-backed ResizeArray vs two Seq.distinct traversals
• ✅ All 703 tests pass

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