JuliaLang/julia

Stable API to strip type parameters from type

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#35,543 opened on Apr 21, 2020

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 (14 comments) (17 reactions) (0 assignees)Julia (5,773 forks)batch import
featurehelp wanted

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Description

Is there a function to strip the type parameters from a type? For example:

strip_type_parameters(Array{Int,3}) # should return Array

There is one way to do this but it is not documented (pointed out by @jakobnissen):

strip_type_parameters(T) = Base.typename(T).wrapper

Therefore in principle it can change in future versions.

Why not have a stable API for this?

Contributor guide

Research direction
Investigate existing internal functions like Base.typename and propose a stable public API for stripping type parameters.
Tech stack
julia
Domain
backend
Issue type
Feature
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.
1-2 days
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.
65