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FastAPI VS Elm

Compare FastAPI VS Elm and see what are their differences

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FastAPI logo FastAPI

FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Elm logo Elm

A type inferred, functional reactive language that compiles to HTML, CSS, and JavaScript
  • FastAPI Landing page
    Landing page //
    2023-05-14
  • Elm Landing page
    Landing page //
    2022-09-23

We recommend LibHunt Elm for discovery and comparisons of trending Elm projects.

FastAPI features and specs

  • High Performance
    Built on Starlette and Pydantic, FastAPI is one of the fastest frameworks for Python, providing high performance due to its asynchronous request handling.
  • Automatic Interactive API Documentation
    FastAPI automatically generates interactive API documentation via Swagger UI and ReDoc, which are very helpful for development and testing.
  • Type Checking and Validation
    With Pydantic models and Python type hints, FastAPI provides automatic data validation and type checking, reducing the chance of runtime errors.
  • Ease of Use
    Its syntax and design make it easy to learn for Python developers, offering a smooth development experience while reducing boilerplate code.
  • Asynchronous Support
    FastAPI supports asynchronous programming, allowing for better performance for I/O-bound operations, making it optimal for handling many simultaneous connections.
  • Extensive Documentation
    It has comprehensive and well-structured documentation, which is very useful for both beginners and advanced users.
  • Community and Ecosystem
    FastAPI has a growing community and ecosystem, with many plugins and integrations available to extend its functionality.

Possible disadvantages of FastAPI

  • Learning Curve for Asynchronous Programming
    Although FastAPI itself is easy to learn, grasping the concepts of asynchronous programming in Python can be challenging for beginners.
  • Complex Dependencies
    Using Pydantic for advanced validation can make the request models complex, requiring a deeper understanding of Pydantic and its functionalities.
  • Early Stage Libraries
    Some third-party libraries and extensions specifically tailored for FastAPI might still be in early stages of development and lack long-term stability.
  • Limited Real-World Examples
    Although the documentation is extensive, there might be limited real-world examples and case studies readily available compared to more mature frameworks.
  • Deployment Complexity
    Deploying FastAPI applications might be more complex in comparison to traditional synchronous frameworks, mainly due to the need for asynchronous server setups.

Elm features and specs

  • Strong Type System
    Elm's type system is designed to catch errors at compile-time, reducing runtime errors and improving code reliability. It emphasizes immutability, making it easier to reason about and maintain code.
  • No Runtime Exceptions
    Elm enforces safety with its type system, ensuring that runtime exceptions are almost impossible. This leads to more robust and predictable applications.
  • Friendly Error Messages
    Elm's compiler provides exceptionally helpful and user-friendly error messages, which make debugging easier and learning the language more approachable.
  • Optimized Performance
    Elm's compiler generates highly optimized JavaScript, resulting in fast and efficient applications. Performance tuning is handled by the compiler, freeing developers from many optimization concerns.
  • Functional Programming
    Elm is purely functional, promoting a clear and declarative coding style. It encourages developers to write more predictable and maintainable code by leveraging functional programming principles.
  • Built-In Architecture
    The Elm Architecture (Model-Update-View) provides a consistent pattern for building applications, which can simplify the development process and improve code organization.
  • Interoperability with JavaScript
    Elm allows you to seamlessly integrate with existing JavaScript code through ports, giving you the flexibility to gradually adopt Elm or work with libraries that are not available in Elm.

Possible disadvantages of Elm

  • Small Ecosystem
    Elm's ecosystem is relatively small compared to more established languages like JavaScript or TypeScript, meaning there are fewer libraries and tools available, which might limit certain functionalities out of the box.
  • Learning Curve
    Elm’s functional programming paradigm and strict type system can be challenging for developers who are not familiar with functional programming, leading to a steep learning curve.
  • Limited Developer Community
    The Elm community is smaller compared to other languages, which can make finding support or example projects more difficult. This might also affect the availability of tutorials and learning resources.
  • Interoperability Overhead
    While interoperability with JavaScript is possible through ports, it introduces additional complexity and overhead, making integrated projects more challenging to manage.
  • Slower Release Cycle
    Elm's development and release cycle can be slower compared to other technologies. Updates and new features might take longer to be released, impacting the adoption of cutting-edge practices.
  • Single File Approach
    In Elm, managing large codebases can be problematic due to the lack of support for splitting code into multiple modules or files akin to solutions in other languages, which can make the code less modular and harder to navigate.

Analysis of FastAPI

Overall verdict

  • FastAPI is widely regarded as a good choice, especially for applications that require high performance, scalability, and modern Python features. It is suitable for both simple and complex projects, making it a versatile tool in the web development ecosystem.

Why this product is good

  • FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.7+ based on standard Python type hints. It is built on top of Starlette for web framework capabilities and Pydantic for data validation and settings management. FastAPI is known for its excellent performance, automatic generation of interactive API documentation (with Swagger and Redoc), and support for asynchronous programming. Developers appreciate its ease of use, detailed documentation, and helpful error messages.

Recommended for

  • Developers building RESTful APIs
  • Teams looking for a high-performance ASGI-based web framework
  • Projects that require asynchronous programming capabilities
  • Applications needing automatic generation of interactive API documentation
  • Python developers who prefer utilizing type hints for code clarity and validation

Analysis of Elm

Overall verdict

  • Elm is a good choice for developers who appreciate functional programming and want a robust, type-safe environment for web development. Its features make it particularly well-suited for projects where reliability and maintainability are critical.

Why this product is good

  • Elm is a functional programming language that is designed for building reliable and maintainable web applications with a focus on simplicity and quality tooling. Its strong type system helps catch errors during compile time, eliminating a whole class of runtime exceptions. Elm also has an emphasis on immutability and functional programming practices, which can lead to more predictable code.

Recommended for

  • Developers interested in functional programming
  • Teams looking for a language with a strong type system
  • Projects where web application stability and reliability are crucial
  • Those wanting to avoid runtime errors with compile-time guarantees
  • Developers who value simplicity and developer-friendly tooling

FastAPI videos

+ Add

FastAPI from the ground up

More videos:

  • Tutorial - 30 Days of Python - Day 14 - Web App with Flask, FastAPI, ngrok, and Invictify - Python TUTORIAL
  • Review - [PT] Python - API com FastAPI - Chat | twitch.tv/codeshow

Elm videos

+ Add

Nightmare on Elm St (series review)

More videos:

  • Review - A Nightmare on Elm Street (1984) - Movie Review
  • Review - A Nightmare on Elm Street 4: The Dream Master - Movie Review

Category Popularity

0-100% (relative to FastAPI and Elm)

FastAPI

Elm

Developer Tools
100 100%
Developer Tools
0% 0
Programming Language
0 0%
Programming Language
100% 100
Web Frameworks
100 100%
Web Frameworks
0% 0
OOP
0 0%
OOP
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FastAPI and Elm

FastAPI Reviews

The 20 Best Laravel Alternatives for Web Development
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
Source: tms-outsource.com
25 Python Frameworks to Master
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack frameworks like Django.
Source: kinsta.com
3 Web Frameworks to Use With Python
myapp/ is the main directory of your FastAPI application. It includes all the other files and directories needed for the application.static/ is a directory used to store static assets such as CSS, JavaScript, and image files. These assets are served directly by the web server and are typically used to add visual styling and interactivity to the application.css/, img/, js/...
Source: www.stratascratch.com
Best Alternatives to FastAPI App Free for Windows (2021)
FastAPI Alternative – So many alternatives app to FastAPI that you must to know out there. And, looking for an ideal software was not easy matter. Lucky you, at this page you can find the best replacement app for FastAPI. So what you are waiting for, get the latest FastAPI alternative app for Windows 10 from this page.
Source: alternativetoapp.com
Top 5 Back-End Frameworks to Consider for Web Development in 2021
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. It is fast when compared to other major Python frameworks like Flask and Django. FastAPI gives great flexibility to fulfill businesses’ API needs in today’s evolving world.
Source: www.fissionlabs.com

Elm Reviews

We have no reviews of Elm yet.
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Social recommendations and mentions

Based on our record, FastAPI should be more popular than Elm. It has been mentiond 289 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

FastAPI mentions (289)

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Elm mentions (123)

  • 3 Options to Avoid Side-Effects in Web Dev
    Use languages that don’t have side-effects; Elm for UI, and Roc for API/CLI. - Source: dev.to / about 2 months ago
  • Reactivity in Programming
    Reactive programming itself is rarely found in pure form. It is often combined with other paradigms. This is how such mixes as Imperative Reactive Programming, Object-Oriented Reactive Programming and Functional Reactive Programming appeared. The latter is the most popular, and the Elm language is considered one of its main representatives. - Source: dev.to / 2 months ago
  • Tsonnet #13 - Carets, columns, and clues: adding lexing error tracing
    I've drawn inspiration from Elm and the blog post Compiler Errors for Humans -- it is nearly a decade old and still inspiring to read. - Source: dev.to / 3 months ago
  • An Ode to TypeScript Enums
    When I see this it makes me want to run for ReasonML/ReScript/Elm/PureScript. Sum types (without payloads on the instances they are effectively enums) should not require a evening filling ceremonial dance event to define. https://reasonml.github.io/ https://rescript-lang.org/ https://elm-lang.org/ https://www.purescript.org/ (any I forgot?) It's nice that TS is a strict super set of JS... But that's about the only... - Source: Hacker News / 3 months ago
  • TypeScript's Lack of Naming Types and Type Conversion in Angular
    Elm, ReScript, F#, Ocaml, Scala… it’s just normal to name your types, then use them places. In fact, you’ll often create the types _before_ the code, even if you’re not really practicing DDD (Domain Driven Design). Yes, you’ll do many after the fact when doing functions, or you start testing things and decide to change your design, and make new types. Either way, it’s just “the norm”. You then do the other norms... - Source: dev.to / 8 months ago
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What are some alternatives?

When comparing FastAPI and Elm, you can also consider the following products

Django - The Web framework for perfectionists with deadlines

Elixir - Dynamic, functional language designed for building scalable and maintainable applications

Flask - a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

Kotlin - Statically typed Programming Language targeting JVM and JavaScript

Laravel - A PHP Framework For Web Artisans

Clojure - Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.

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