jxxcarlson

jxxcarlson

I have a Regex that works correctly in tests but not when my run my app. No idea what is going on. Here is the regex expression: Regex.scan(~r/^\[([a-z].*)\].--.(.*).--/msU, text) .
Here is the string I apply it to:

[quote]
--
foo, bar
baz
--

fdfd

The correct scan result is

# [quote]
# --
# foo, bar
# baz
# --
# fdfd

["[quote]\n--\nfoo, bar\nbaz\n--",
"quote",
 "foo, bar\nbaz"]

This is what I get using the regex tester at elixre.uk and also when I run tests with mix test ... However, when I use the above regex expression in my app, the result is an empty list – the regex recognizes nothing. What to do?

Showing Posts 1 to 2

NobbZ

NobbZ

Your regular expression fails for me if I put windows line endings in the string ("\r\n") instead of Linux ones ("\n"). The option

This is, because . does match only \r then, after that the regex demands to get a - but there is \n, so it fails.

So you have 3 options:

  1. Demand the client to deliver only Linux-Endings, but depending on the tech knowledge of the client that may be impossible
  2. Normalize the input before feeding to the RE-scan, which should be the easiest one
  3. replace the dots that shall match line endings by (?:\r|\n|\r\n), but the output needs to be cleaned up as well.
jxxcarlson

jxxcarlson OP

Thank you! I choose your suggested option (2). Simple and works like a charm.

— All posts loaded —

Where Next? Top

Trending in Questions Top

Blokh
Hey guys, I’ve got a huge CSV ( around 10 GB ) that needs to be processed hourly Do you guys have any suggestions what is the best prac...
New
kszambelanczyk
Hello! Could someone please give me a help/sample code, how to delete a file from s3 using waffle/waffle_ecto from Phoenix app. I creat...
New
Onor.io
I have what I’ve heard referred to as a “lookup table” in my database. This is a way of assigning codes to common values. One common lo...
New
jaybe78
Hello, I’m developing a online persistent chat system (what’s app) like using elixir/dynamodb/aws for a mobile app(flutter). The diffic...
New
Trolleger
What approach to take when sending live updates to “random” users Hi! I have a question, I have a little chat app, and when I create a DM...
New
matt-savvy
Anyone here using Honeybadger? My Honeybadger account is being overwhelmed with noise from some bots. Seeing a lot of Bandit.HTTPError...
New
RemyXRenard
I’m seeing that a list inside a Kino.DataTable will be interpreted as a charlist, even if the Kino.configure() is set to charlists: :as_l...
New

Other Trending Topics Top

garrison
Hobbes is a low-level distributed database for the Elixir programming language. Hobbes provides a simple, safe, and scalable storage lay...
New
mcass19
ExRatatui lets you cook up rich terminal UIs in Elixir, powered by Rust’s ratatui via Rustler NIFs. Build interactive terminal applicatio...
New
Damirados
Hello everyone. After busy few months I am happy to announce v0.1.0 of Emerge & Solve. They are GUI (Emerge) and State management (S...
New
netoum
Corex is an accessible, unstyled UI component library for Phoenix that integrates Zag.js state machines using Vanilla JavaScript and Live...
New
wintermeyer
There are three potential reasons for members of this forum to have a look at https://vutuv.de You are tired or annoyed of LinkedIn. Yo...
New
webofbits
Aludel - LLM Evaluation Workbench Aludel is an embeddable Phoenix LiveView dashboard for evaluating and comparing LLM prompts across mult...
New

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews