vex vs Norm

vex

Data Validation for Elixir (by CargoSense)

Validations

Source Code

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Norm

Data specification and generation (by elixir-toniq)

Validations Elixir property-based-testing Specifcation

Source Code

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vex		Norm
	Project
-	Mentions	4
588	Stars	680
0.7%	Growth	0.4%
5.3	Activity	0.0
3 months ago	Latest Commit	about 1 year ago
Elixir	Language	Elixir
MIT License	License	MIT License

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

vex

Posts with mentions or reviews of vex. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning vex yet.
Tracking mentions began in Dec 2020.

Norm

Posts with mentions or reviews of Norm. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-05-12.

Pattern matching and guards as a form of natural type specification?
1 project | /r/elixir | 24 Jan 2022

Forget the typespecs. Have a boundary layer where you check the shape of things and their types as they enter your system and possibly convert them to some type you need inside your system. Norm is great for this.
Question on how to idiomatically apply "defensive programming" concepts from Pragmatic Programmer book
1 project | /r/elixir | 5 Jul 2021

HexDocs for norm. — I am not a robot but maybe there should be a Hex package manager auto link bot. 🤖
Erlang/OTP 24 Highlights
2 projects | news.ycombinator.com | 12 May 2021

I generally verify types only at the boundaries of my application (or very critical modules) using norm[1].
Either you have a strict type system that does not have an "any" type (yes, I'm looking at you Typescript), or you have a flexible type system like Python/Erlang/Elixir and you do runtime type checking whenever it's needed.
I'm writing more Typescript code than I would in Javascript for almost no type safety benefits (but for documentation, it's awesome).
[1] - https://github.com/keathley/norm
Clojure Spec like library in Elixir for data generation
2 projects | /r/elixir | 4 Mar 2021

Check out Norm. Sounds like it's right up your alley

What are some alternatives?

When comparing vex and Norm you can also consider the following projects:

skooma - Elixir data validation library

valdi - Simple data validation for elixir

avex

is - Fast, extensible and easy to use data structure validation for elixir with nested structures support.

exop - Elixir library that provides macros which allow you to encapsulate business logic and validate incoming parameters with predefined contract.

shape - A data validation library for Elixir based on Prismatic Scheme

voorhees

optimal - A schema based keyword list option validator.

ExGtin - Elixir GTIN & UPC Generation and Validation Library

uk_postcode - UK postcode parsing and validation for Elixir