Δ Diff Delta™️ Under the Hood

Diff Delta™ is GitClear's empirically-validated appraisal of how much durable change occurred per commit. Since making durable changes to code requires cognition, Diff Delta approximates "cognitive load."

To assess durable change, Diff Delta follows the long-term fate of each line of code authored -- through moves, renames, and other updates. Our proprietary method of weaving history together has a handy side effect for devs: It allows more detailed & flexible diff viewing than whatever tools you've tried before

Learn how GitClear works in four minutes

🎓 Shareable Code Research

The prospect of using data and measurement to inform engineering goals is a novel idea for many teams. For those considering whether to champion code review, measurement, and data in general, here are a few PDFs to help spark a conversation with your team.

Diff Delta™ correlation research

Academically-reviewed research on the correlation between Diff Delta and developer effort, suggesting improvement vs. Commit Count

Diff Delta™ benchmark research

Data to help gauge whether development efforts are approaching product/market fit

How Commit Groups enhance Diff Delta™

Learn how Commit Groups create a historical tapestry that picks out substantive changes from noise

Line-based factor

Code Churn

This is an explanation of code churn

And this is an example of it

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Line

File

Commit

Branch

Diff Delta™

Code churn

Activity type

Domain

File extension

Ignorable files

File purpose

Duplicate sections

Greenfield implementation

Merge commits

Related commits

Ignore branches

A Visual Guide to Diff Delta™ and Commit Groups

Our downloadable PDF is the most sharable way to introduce your team to how Diff Delta and Commit Groups. We'll show how these two work together to drive better results for your team. In this guide, you'll learn:

How your current git provider compares to GitClear
Why hundreds of teams trust GitClear to make better decisions
How we identify bugs & tech debt overlooked in your current process

Imagine: all of this and more in less than 3mb :-)

Download the Visual Guide to Diff Delta and Commit Groups

Diff Delta™ Distribution

The tables below illustrate the range of weekly Diff Delta values accumulated per developer. All percentiles are recalculated daily.

Signature Features

Developer Experience

Manager Corner

Δ Diff Delta™️ Under the Hood

🎓 Shareable Code Research

A Visual Guide to Diff Delta™ and Commit Groups

Diff Delta™ Distribution