Elixir’s interactive shell.
iex is Elixir’s interactive shell, which can be used to interactively run Elixir code from the command line.
Questions tagged [elixir-iex]
150 questions
10
votes
2 answers
Can I customize Elixir iex to exit with ctrl-D?
I know several ways to quit iex but I'd love to use ctrl-D like in other REPLs (e.g., node, irb.)
How can I customize iex to do this?
jwfearn
- 28,781
- 28
- 95
- 122
10
votes
1 answer
Alias all contents of a module/namepsace in IEX
Following the advice in this question regarding how to load iex with the dependencies of the current project I was able to work with phoenix framework dependencies in a pretty productive manner. However, it gets a bit tedious having to provide the…
Graham Conzett
- 8,344
- 11
- 55
- 94
8
votes
2 answers
How do you get the elixir compiler to show warnings when running a phoenix server?
Running a phoenix server in iex session via mix, like:
iex -S mix phx.server
Will sometimes give a list of warnings like:
Compiling 1 file (.ex)
warning: variable "user" is unused
lib/app_web/controllers/user_controller.ex:37
But seemingly only…
Laser
- 5,085
- 4
- 34
- 48
7
votes
1 answer
How do I run `iex -S mix` without compiling changed files?
Say I'm writing a new module, the code isn't ready yet and I want to test something in the repl.
I run iex -S mix and it fails because of compilation errors I didn't intend to fix yet.
I presume there is a last compiled version of my app that I…
Morozov
- 2,719
- 2
- 21
- 23
7
votes
1 answer
Phoenix: Requiring IEx in only :dev and :test for entire project
I'm new to Elixir/Phoenix and I was wondering if there was a way to essentially require IEx for the purpose of IEx.pry in the same manner that in Ruby/Rails you can add something like
group :test, :development do
gem 'pry', require:…
VitaminMarc
- 193
- 1
- 8
7
votes
1 answer
How to avoid ecto logs inside iex?
I have a worker which creates database queries, like that:
defmodule MyApp.Periodically do
use GenServer
def start_link do
GenServer.start_link(__MODULE__, %{})
end
def init(state) do
schedule_work() # Schedule work to be performed…
Alex Antonov
- 14,134
- 7
- 65
- 142
7
votes
1 answer
How to make custom prompt take effect at iex start?
I have a custom prompt but when I launch iex, a builtin prompt shows. After I hit enter my prompt takes effect. How can I make my prompt take effect when iex starts?
Here's what I'm seeing:
And this is my .iex.exs file:
IEx.configure(
colors: […
jwfearn
- 28,781
- 28
- 95
- 122
7
votes
1 answer
How to get Line Numbers in Console Outputs in Elixir
I need to get line numbers for IO.puts or IO.inspect or any other kind of output that appears on elixir console for the purpose of debugging. Is there an in-built feature for this? Or is there any other easy way to achieve the same?
P.S: By Line…
Kshitij Mittal
- 2,698
- 3
- 25
- 40
6
votes
2 answers
How do I list all shell variables in IEx?
I can't figure out how to view my current context in IEx. I want to see a list of all the variable that have been defined in the shell. Is this possible? Thanks.
tadasajon
- 14,276
- 29
- 92
- 144
6
votes
3 answers
What is the exact meaning of the equal sign in Elixir?
I don't get what exactly means the equal sign in Elixir.
What is unclear is that it looks like a mix between assignment and a pattern matching operation.
iex(1)> x=4
4
iex(2)> y=5
5
iex(3)> 3=y
** (MatchError) no match of right hand side value:…
Melicerte
- 118
- 1
- 8
6
votes
1 answer
Increase timeout period of Elixir IEx.pry session
I'm trying to increase the timeout period of an IEx.pry session. Specifically, I'my pry-ing in a Phoenix framework unit test. I've added the following to the body of my test:
require IEx
IEx.pry
I looked at the IEx documentation for the pry…
Elliot Larson
- 10,669
- 5
- 38
- 57
5
votes
1 answer
Is there a vim mode available for `iex`
Is there a vim mode available for iex? That is, something like set -o vi in bash.
Here's my version info: IEx 1.13.0 (compiled with Erlang/OTP 24)
I'm running it on Linux Mint 20.2 Uma.
Stephen Swensen
- 22,107
- 9
- 81
- 136
5
votes
2 answers
Get a list of all elixir modules in IEx
To get a list of all functions on a module in IEx I can run:
Map.__info__(:functions)
# or
Enum.__info__(:functions)
Using the {Module}.__info__(:functions) format.
How can I get a list of all the standard lib modules?
Loading...
- 863
- 9
- 21
5
votes
1 answer
Very basic IEx and IEx.pry from an elixir script gets error: IEx shell running?
I'm working through Dave Thomas' Programming Elixir and I'm attempting some examples from the list chapter.
When I'm learning a language I prefer to stay as basic as I can by running