JuliaPluto/Pluto.jl

Update dependent cells for functions modifying their arguments

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#316 opened on Aug 24, 2020

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Description

Currently, dependencies introduced by functions modifying their arguments in-place are not considered for notebook updates.

Example (each row in a separate Pluto cell):

a = [4, 3, 2, 1]
a # prints [4, 3, 2, 1]
sort!(a) # prints [1, 2, 3, 4], but does not update previous cell

Contributor guide

Tech stack
None
Domain
developer experience
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Juliaunderstanding of Pluto reactive notebook model
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Review comments on issue #316 for prior discussion. Examine the dependency graph construction in Pluto.jl, focusing on the handling of side effecting functions like sort!. Look for the code that determines cell dependencies and identify where in place modifications are missed.