Hi, When I run some functions in Julia I obtain this error: The applicable method may be too new: running in world age 26887, while current world is 26894. If I run the code again, there is no error. This is a systematic behavior, every time I start Julia.

Maybe try updating Julia? What version of Julia are you on? And did you download binaries, or build from source?

I just downloaded the latest version of JuliaPro and I am running it from there. Does it help?

This usually means that you are using eval to define new functions inside your function and then trying to call them. See the explanation here: Help calling a function defined from expressions - #4 by stevengj Calling eval inside a function is almost always the wrong thing to do. Often new Juli…

Check your startup.jl (under ~/.julia/config/ I believe). I’m sure you’re doing something similar to what Steven is indicating.

Where do I find the file startup.jl? Also, I am not sure how I am using eval the way you suggest. Just to be clear, once I re-run the code the second time, I have no issue. What I do: I create a mutable struct and then a function y that takes it as argument and runs a function x inside. Then I use …

[image] juliauser: Where do I find the file startup.jl? The startup file is ~/.julia/config/startup.jl as I indicated previously. [image] juliauser: Please let me know if I should provide any more detailed information. Please do, it’ll make it easier for us to give you a concrete solu…

This is the content of my startup.jl file DO NOT EDIT THIS FILE, ALL THE CONTENTS OF THIS FILE WILL BE DELETED ON EVERY LAUNCH OF JULIAPRO popfirst!(DEPOT_PATH) ENV[“JULIA_PKG_SERVER”] = “ https://pkg.juliacomputing.com/ ” ENV[“JULIA_PKG_TOKEN_PATH”] = joinpath(homedir(),“.juliapro”,“token.toml”) …

So, your startup.jl file is fine (in the future, please put your code between triple backticks (```) when posting to Discourse). [image] juliauser: Also, the issue happens whenever I define a mutable struct inside a function. Wait, how/why are you trying to do this? You cannot normally defin…

[image] jpsamaroo: Can you show what you’re doing, and briefly describe your end-goal? Agreed. Here’s some guidelines for clearly describing your problem: [image] Please read: make it easier to help you Meta Discussion Welcome to the Julia Discourse! We are enthusi…

Running in world age ... while current world is

General Usage

c42f May 20, 2019, 3:56am 10

Agreed. Here’s some guidelines for clearly describing your problem:

Topic		Replies	Views
World Age Problem Explanation General Usage world_age	21	11719	September 24, 2025
Too new for this world problem when called from a function General Usage question	14	2015	November 2, 2021
How to Bypass the World Age Problem General Usage world_age	30	8867	November 19, 2017
World age problem from a package General Usage world_age	11	406	January 23, 2024
"running in world age X, while current world is Y" errors General Usage world_age	5	7612	September 15, 2017

Running in world age ... while current world is

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