JuliaLang/julia

Uninformative Broadcast Error Message

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#30,438 opened on Dec 18, 2018

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 (7 comments) (5 reactions) (0 assignees)Julia (5,773 forks)batch import
broadcasterror messagesgood first issue

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Description

A = rand(3,5)
B = rand(2,2)
C = A .+ B

Gives ERROR: DimensionMismatch("arrays could not be broadcast to a common size") as error message. However, it would better to print out the sizes of the input arrays, wouldn't it?

Contributor guide

Research direction
Locate the broadcasting error handling in base/broadcast.jl and modify the DimensionMismatch message to display the sizes of the arrays involved.
Tech stack
None
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
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
Julia
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75