zcking
Printing raw string stored in variable
I’m trying to figure out how to print out the contents of a string variable, without it interpreting the characters like \n and \t as newlines and tabs. I want to display the “raw” string such as you would do with ~S(raw \n string \t here), however, I cannot pass a variable or interpolate with that sigil.
Is there an idiomatic way to do this with Elixir?
Marked As Solved
kip
Or just call Kernel.inspect/2:
iex> inspect(s)
"\"raw \\n string \\t here\""
iex> inspect(s) |> String.trim("\"")
"raw \\n string \\t here"
Yes, the leading and trailing part might need to be trimmed if you need. But it seems closer to what you’re after - an escaped string.
Also Liked
kip
Kernel.inspect has options to control this via Inspect.Opts:
• :charlists - when :as_charlists all lists will be printed as char
lists, non-printable elements will be escaped.
When :as_lists all lists will be printed as lists.When the default :infer, the list will be printed as a charlist if it is
printable, otherwise as list.
As an example:
iex(6)> inspect [32,33,34], charlists: :as_lists
"[32, 33, 34]"
iex(7)> inspect [32,33,34]
"' !\"'"
You can tell IEx to default to this behaviour by:
hex> IEx.configure [inspect: [charlists: :as_lists]]
:ok
iex> [32,33,34]
[32, 33, 34]
Last Post!
kip
Kernel.inspect has options to control this via Inspect.Opts:
• :charlists - when :as_charlists all lists will be printed as char
lists, non-printable elements will be escaped.
When :as_lists all lists will be printed as lists.When the default :infer, the list will be printed as a charlist if it is
printable, otherwise as list.
As an example:
iex(6)> inspect [32,33,34], charlists: :as_lists
"[32, 33, 34]"
iex(7)> inspect [32,33,34]
"' !\"'"
You can tell IEx to default to this behaviour by:
hex> IEx.configure [inspect: [charlists: :as_lists]]
:ok
iex> [32,33,34]
[32, 33, 34]
Popular in Questions
Other popular topics
Latest on Elixir Forum
Sponsor Spotlight
Practical resources that improve the lives of professional developers.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #channels
- #elixirconf
- #exunit
- #discussion
- #code-sync
- #javascript
- #podcasts
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #phoenix_html
- #iex
- #blog-post
- #graphql
- #genstage
- #ai
- #websockets
- #supervisor
- #elixirconf-us
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #metaprogramming
- #security
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking for Elixir devs who love to ship. Start your free account.
Practical resources that improve the lives of professional developers.
Develop your skills with books, videos, and courses.
Producing high quality Elixir screencasts since 2017.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"