JuliaDiff/ChainRulesCore.jl

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AD-backend agnostic system defining custom forward and reverse mode rules. This is the light weight core to allow you to define rules for your functions in your packages, without depending on any particular AD system.

Stars: 267
Forks: 66
Open beginner issues: 0
Indexed issues: 112

Dominant language: Julia
License: No license data
Last GitHub push: Jun 22, 2026
Latest indexed: Sep 18, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

112 open issues indexed

A trait-based system to handle Wirtinger derivatives Open

Complex Differentiation

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#77 · 4 comments · Opened Jan 3, 2020
The Representation Problem: semantic types, vs computational types Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaDiff/ChainRulesCore.jl#73 · 1 reaction · Opened Dec 25, 2019
Jacobians Open

speculative

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#66 · 4 comments · Opened Nov 18, 2019
What to do if `@thunk` is applied to a variable (rather than an expression) ? Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaDiff/ChainRulesCore.jl#50 · 4 comments · 1 reaction · Opened Sep 12, 2019
Write docs on how to write rules to run different computations at different times Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 35/100

JuliaDiff/ChainRulesCore.jl#46 · 3 comments · 1 reaction · Opened Sep 3, 2019
Invocation helpers Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaDiff/ChainRulesCore.jl#45 · 1 comment · 1 reaction · Opened Sep 3, 2019
Delaration helpers Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#44 · 5 comments · 1 reaction · Opened Sep 3, 2019
Some thoughts on Wirtinger Open

Complex Differentiation

Difficulty 5/5 Over a week Newbie friendliness 20/100

JuliaDiff/ChainRulesCore.jl#40 · 19 comments · Opened Aug 30, 2019
Make Differentials more Numbery Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#37 · 4 comments · 1 reaction · Opened Aug 30, 2019
Special case derivative of non-holomorphic functions of type ℂ(^n)→ℝ Open

Complex Differentiation

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#23 · 2 comments · Opened Aug 19, 2019
Explicit Rules for Higher Order "Adjoints" Open

speculative

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#67 · 7 comments · 1 reaction · Opened Jul 31, 2019
CachingThunks Open

enhancement pending-clear-need

Difficulty 5/5 Over a week Newbie friendliness 25/100

JuliaDiff/ChainRulesCore.jl#7 · 10 comments · 1 reaction · Opened May 10, 2019

JuliaDiff/ChainRulesCore.jl

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