Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.
IEx Cheat Sheet
@troush69 | github.com/Troush
Presentation.Supervisor.start_link(self(), {:slide, 1})
Starting IEx
1 iex
2
3 iex -S mix #Starting IEx in the context of your app
1 iex(1)> sum = fn (a, b) ->
2 ...(1)> c + b
3 BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
4 (v)ersion (k)ill (D...
Ctrl + c menu actually `erl` shell menu
● (a)bort - abort interactive mode. Eg: Exit
● (c)ontinue - continue interactive m...
Ctrl + g
1 User switch command
2 --> s 'Elixir.IEx'
3 --> c
4
5
6 User switch command
7 --> c 1
Ctrl + g
● c [nn] - connect to job
● i [nn] - interrupt job
● k [nn] - kill job
● j - list all jobs
● s [shell] - start lo...
Ctrl-
What I didn’t know is that you can exit the shell by sending Ctrl-. The shell will
exit immediately. As far as I kno...
.iex.ex
Every time IEx starts it will look for a .iex.exs configuration file. If it’s not
present in the current directory...
.iex.ex
1 IO.puts "Hello, World"
$ iex
Erlang/OTP 19 [erts-8.2] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [ker...
Configuring the shell
No limit on IO.inspect
IEx.configure [inspect: [limit: :infinity]]
IEx Helpers
h Module
h
Module.fn/arity
v(n  -1)
Returns the value of the nth expression in the history.
IEx.pry()
r(module)
Recompiles and reloads the given module.
Please note that all the modules defined in the same file as
module are...
respawn
Respawns the current shell by starting a new shell process.
Returns true if it worked.
Debugging
Phoenix
Views
Debugging
Phoenix
Templates
Debugging
Phoenix
Tests
Don’t forget to run your test
suite with:
iex -S mix test --trace
Questions?
Alex Troush - IEx Cheat Sheet. Guide to Win with IEx on your Day to Day Job
Prochain SlideShare
Chargement dans…5
×

Alex Troush - IEx Cheat Sheet. Guide to Win with IEx on your Day to Day Job

392 vues

Publié le

Elixir Club 6 - March 18, 2017
Nivki Hall

Publié dans : Technologie
  • Soyez le premier à commenter

Alex Troush - IEx Cheat Sheet. Guide to Win with IEx on your Day to Day Job

  1. 1. IEx Cheat Sheet @troush69 | github.com/Troush
  2. 2. Presentation.Supervisor.start_link(self(), {:slide, 1})
  3. 3. Starting IEx 1 iex 2 3 iex -S mix #Starting IEx in the context of your app
  4. 4. 1 iex(1)> sum = fn (a, b) -> 2 ...(1)> c + b 3 BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded 4 (v)ersion (k)ill (D)b-tables (d)istribution “ctrl+c”
  5. 5. Ctrl + c menu actually `erl` shell menu ● (a)bort - abort interactive mode. Eg: Exit ● (c)ontinue - continue interactive mode ● (p)roc info - get processes information ● (i)nfo - get Erlang runtime information ● (l)oaded – list of loaded modules to current shell ● (v)ersion – version of `erl` ● (k)ill – kill process menu ● (D)b-tables - get info about d/ets avaible in current shell ● (d)istribution - distribution info
  6. 6. Ctrl + g 1 User switch command 2 --> s 'Elixir.IEx' 3 --> c 4 5 6 User switch command 7 --> c 1
  7. 7. Ctrl + g ● c [nn] - connect to job ● i [nn] - interrupt job ● k [nn] - kill job ● j - list all jobs ● s [shell] - start local shell ● r [node [shell]] - start remote shell ● q - quit erlang ● ? | h - this message
  8. 8. Ctrl- What I didn’t know is that you can exit the shell by sending Ctrl-. The shell will exit immediately. As far as I know, it has the same effect as aborting the shell in the Break command, it doesn’t affect remote nodes and it also works outside of iex (for example, you can use to terminate your tests)
  9. 9. .iex.ex Every time IEx starts it will look for a .iex.exs configuration file. If it’s not present in the current directory, then the user’s home directory (~/.iex.exs) will be used as the fallback.
  10. 10. .iex.ex 1 IO.puts "Hello, World" $ iex Erlang/OTP 19 [erts-8.2] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false] Interactive Elixir (1.4.0) - press Ctrl+C to exit (type h() ENTER for help) Hello, World iex(1)>
  11. 11. Configuring the shell
  12. 12. No limit on IO.inspect IEx.configure [inspect: [limit: :infinity]]
  13. 13. IEx Helpers
  14. 14. h Module
  15. 15. h Module.fn/arity
  16. 16. v(n -1) Returns the value of the nth expression in the history.
  17. 17. IEx.pry()
  18. 18. r(module) Recompiles and reloads the given module. Please note that all the modules defined in the same file as module are recompiled and reloaded.
  19. 19. respawn Respawns the current shell by starting a new shell process. Returns true if it worked.
  20. 20. Debugging Phoenix Views
  21. 21. Debugging Phoenix Templates
  22. 22. Debugging Phoenix Tests Don’t forget to run your test suite with: iex -S mix test --trace
  23. 23. Questions?

×