threetriangles
I was reading through the Enum module functions and copying them into the repl to get a feel for how they work. I pasted the following into the repl from the documentation.
Enum.chunk_by([1, 2, 2, 3, 4, 4, 6, 7, 7], &(rem(&1, 2) == 1))
Instead of it returning this, as it should per the docs: [[1], [2, 2], [3], [4, 4, 6], [7, 7]]
It returned this: [[1], [2, 2], [3], [4, 4, 6], '\a\a']
What’s going on?
I even got the same result when I used an online repl.
https://replit.com/@threetriangles/MinorWaryGraphicslibrary#main.exs
Where Next?
Trending in Questions
Other Trending Topics
Latest on Elixir Forum
Sponsor Spotlight
Error tracking, logs, APM, uptime and cron monitoring in one dev-friendly platform. Find and fix problems before your users notice.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #ai
- #podcasts-by-brainlid
- #ecto-query
- #blog-post
- #elixirconf-us
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #elixirconf-eu
- #api
- #forms
- #security
- #metaprogramming
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Master modern tools, write cleaner code, and tackle real-world challenges.
Bringing learning, work and compliance together since 1987.
**Building the future of software with AI, trust, and human connection.**
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
First Post!- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
al2o3cr
A list containing only integers that represent printable ASCII is indistinguishable from an Erlang charlist.
The REPL uses
inspectwhich tries to pick the correct representation based on the values in the list: if none of them are unprintable, they are displayed as a charlist - because'hello'is more readable than a list of numbers:Most Liked
freevova
Check IEx — IEx v1.13.4.
l00ker
You can set it globally using The .iex.exs file by adding the following:
cjbottaro
The repl is trying to “inspect” the return value and it can’t distinguish between a list of integers or a “charlist”.
You can force it to interpret as a list of integers, but I forgot how.
You can also do this:
A charlist is a list of characters, i.e. like this:
['a', 'b', 'c']and a char is basically an integer, so the repl gets confused with how to display a list of ints.Gah, I forgot to hit the reply button and several people have already answered, but I’m going to hit the button anyway so I can feel smart and good about myself…