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Codebase review: bugs, performance, and modernization findings

Status: Open.

#1143 In scikit-hep/boost-histogram;

· henryiii opened on Jun 11, 2026

Float precision difference of variable axis bins causes 'axes not mergable' exception when summing histograms

Status: Open.

#1054 In scikit-hep/boost-histogram;

· dsavoiu opened on Oct 12, 2025

[BUG] Histogram with IntCategory and StrCategory axes can be zeroed by out-of-bounds fill values.

Status: Open.

#960 In scikit-hep/boost-histogram;

· NJManganelli opened on Sep 14, 2024

Pickling a histogram creates an extra copy of the array in memory

Status: Open.

#828 In scikit-hep/boost-histogram;

· bendavid opened on Feb 13, 2023

[FEAT] in multidimensional histograms allow the binning to vary along an axis

Status: Open.

#746 In scikit-hep/boost-histogram;

· tmombaecher opened on Jun 3, 2022

[FEAT] Add operators (mult/div/sub) for (weighted) histograms/accumulators

project ideaCould be a fellow projectCould be a fellow project

Status: Open.

#693 In scikit-hep/boost-histogram;

· jonas-eschle opened on Feb 2, 2022

[FEAT]: Support scaling and addition for Mean Views

good first issueGood for newcomersGood for newcomers

project ideaCould be a fellow projectCould be a fellow project

Status: Open.

#560 In scikit-hep/boost-histogram;

· henryiii opened on Apr 26, 2021

Smarter UHI in slices

good first issueGood for newcomersGood for newcomers

Status: Open.

#485 In scikit-hep/boost-histogram;

· henryiii opened on Dec 19, 2020

Proposal to add a value_range

Status: Open.

#482 In scikit-hep/boost-histogram;

· HDembinski opened on Dec 10, 2020

Feature request: add collector accumulator

enhancementNew feature or requestNew feature or request

project ideaCould be a fellow projectCould be a fellow project

UpstreamBest addressed in Boost.HistogramBest addressed in Boost.Histogram

Status: Open.

#353 In scikit-hep/boost-histogram;

· HDembinski opened on Apr 6, 2020

Document redundancy deletion

docsDocumentationDocumentation

good first issueGood for newcomersGood for newcomers

Status: Open.

#306 In scikit-hep/boost-histogram;

· LovelyBuggies opened on Feb 24, 2020

Select several items from a category axis

enhancementNew feature or requestNew feature or request

Status: Open.

#296 In scikit-hep/boost-histogram;

· henryiii opened on Jan 2, 2020