Questions & Help>Questions

Any articles about applying CRC (Constructors, Reducers, and Converters) pattern

#design-patterns
fireindark707

fireindark707

Any articles about applying CRC (Constructors, Reducers, and Converters) pattern

I just read this pattern from the pragprog’s Phoenix LiveView online course on educative. I think it is edited from the book Programming Phoenix LiveView. But there is not much to introduce here, it just provides a prelude to explain Phoenix’s Plug. I would like to know how this pattern is widely used in more general contexts.

1 comment
#design-patterns
0 1211 1

Marked As Solved

Where Next?

View thread on forum (has 1 response!)
design-patterns
Home Questions & Help>Questions
#design-patterns
0 1211 1
Last post

Popular in Questions Top

Trevoke
Questions & Help>Questions

(EXIT) no process: the process is not alive or there's no process currently associated with the given name, possibly because its application isn't started
I have an umbrella app. Some of the apps inside depend on other apps in the umbrella, unsurprisingly. I’m writing a test for one of the...
#otp#umbrella#testing#exunit#errors
26 21840 11
New
hariharasudhan94
Questions & Help>Questions

How to use return statement with if condition in elixir?
lets say i have a sample like a = 20; b = 10; if (a > b) do {:ok, "a"} end if (a < b) do {:ok, b} end if (a == b) do {:ok, "equa...
/phoenix
10 20249 6
New
stefanluptak
Questions & Help>Questions

Using VSCode on multiple monitors
Hello everybody, usually, I use a 29" ultra-wide monitor for VSCode which can easily accomodate explorer (files panel) + file with code ...
#vscode#vscode-elixir
7 17994 6
New
vrod
Questions & Help>Questions

Starship (cross-shell prompt) error - (starship::utils): Executing command "elixir" timed out
I am using the Starship cross-shell prompt – it seems pretty nice, but I get some errors: [WARN] - (starship::utils): Executing command ...
#starship
8 17418 3
New
vonH
Questions & Help>Questions

How do I kill a process ` #PID<0.186.0` in iex?
When I run the Plug and I recompile I wind up having to use Ctrl C to quit iex and start again. Witht the help of rlwrap I can use the cu...
#iex#processes#how-to-question
37 21511 8
New
ashish173
Questions & Help>Questions

Difference in between :utc_datetime and :naive_datetime in Ecto
I am using Ecto timestamps with postgres, I can see the timestamps() use the :naive_dateime but for my use case I wanted to store the ti...
#ecto#timestamps
79 28261 15
New
jason.o
Questions & Help>Questions

No such input `xxxxx` for action ResourceName1.create
In the code below, if the create action is not set to accept “extra_key” as an input, it errors out with a message shown above. Is there ...
/ash
3 78654 2
New
script
Questions & Help>Questions

Removing spaces and characters from string
If I have a string “1000 cfu/ml” . I want to remove the characters and / and space . So the string is like this "1000" What is the ...
#regex
11 14550 2
New
JorisKok
Questions & Help>Questions

How is it possible to get 2 million websocket connections when you have 65536 available ports?
I have a server on AWS, and was running a load test using artillery. When looking at the Phoenix dashboard I see the Ports going to 100% ...
/phoenix
20 19015 4
New
vegabook
Questions & Help>Questions

How to serve an img with Phoenix?
I’m brand new to Phoenix and I have stripped one of the demo applications to the bone. I just want to get an svg up on the screen. Here i...
/phoenix
15 18788 5
New

Other popular topics Top

axelson
Chat & Discussions>Wikis

Emacs - Elixir Setup Configuration Wiki
This post is a wiki (feel free to hit the edit button near the bottom right of this post to add your own changes!) This post collects co...
#spacemacs#wiki#emacs#code-editors#language-server-protocol
239 48342 226
New
Patoshizzle
Questions & Help>Questions

(Postgrex.Error) FATAL 28P01 (invalid_password) password authentication failed for user “postgres”
After calling mix ecto.create I get this error: 17:00:32.162 [error] GenServer #PID&lt;0.412.0&gt; terminating ** (Postgrex.Error) FATAL...
#ecto#postgres#troubleshooting
10 30105 20
New
JeremM34
Questions & Help>Questions

How can I check Phoenix version?
Hello, how can I check the Phoenix version ? Thanks !
/phoenix
35 28311 8
New
AngeloChecked
Chat & Discussions>Discussions

What to learn first - Rust or Elixir?
What learn first? Rust or Elixir Hi Elixir community! I’m here because i want learn a new language. I’m a junior developer and mainly i ...
#learning-elixir
54 22638 20
New
aesmail
News>Announcing

Kaffy - a quick and flexible admin interface for phoenix applications
Hello guys, I have finally made it. I created an admin interface for a framework. It’s been on my todo list for years and with the curre...
/phoenix#ecto#library#admin-tools#kaffy
301 24408 97
New
AstonJ
Chat & Discussions>Discussions

Elixir Code Editors & IDEs - which one are you using? (Poll)
Please see the new poll here: Which code editor or IDE do you use? (Poll) (2022 Edition) It’s been a while since we first asked this, I...
#code-editors
208 31265 143
New
joaquinalcerro
Questions & Help>Questions

What is the best approach for fetching large amount of records from postgresql with ecto
Hi there, I am working with Ecto-Postgresql and I need to call all of the records from a specific table but the table has 40,000 records...
#ecto
126 24885 27
New
AstonJ
Chat & Discussions>Wikis

Phoenix LiveView Info
We’ve put together this wiki for Phoenix LiveView - please feel free to add any info you feel is worth including. What is Phoenix LiveV...
#wiki
220 26048 73
New
jaysoifer
Questions & Help>Questions

How to rollback a specific ecto migration?
Is there a way to rollback a specific migration and only that one (“skipping” all the other ones)? Would mix ecto.rollback -v 200809061...
/phoenix#ecto
13 16816 7
New
lanycrost
Questions & Help>Questions

How To Implement if...else if...else condition
Hi everyone! I need implement if…else if…else condition from my elixir code, and anymore of this control flow structures not work proper...
#how-to-question
40 52356 6
New
Back to top

Questions & Help>Questions

Questions Questions ❯

Latest on Elixir Forum

Elixir Forum ❯

Sponsor Spotlight

AppSignal

Catch errors, track performance, monitor hosts and more.

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Error tracking for Elixir devs who love to ship. Start your free account.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Manning

Develop your skills with books, videos, and courses.

WyewWorks

Enabling companies to succeed by building software people love.

Software Mansion

The team behind Membrane, Popcorn, LiveDebugger. Available for hire.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Forums

Popular Tags

Our Sponsors

Dashbit

Build Elixir applications with speed and confidence.

EEF

Supporting innovation across the BEAM ecosystem.

Coders51

We build reliable cloud platforms for business-critical systems.

AppSignal

Catch errors, track performance, monitor hosts and more.

Honeybadger

Error tracking for Elixir devs who love to ship. Start your free account.

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Manning

Develop your skills with books, videos, and courses.

WyewWorks

Enabling companies to succeed by building software people love.

Software Mansion

The team behind Membrane, Popcorn, LiveDebugger. Available for hire.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement