Haskell VS Lean

Compare Haskell VS Lean and see what are their differences

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Haskell

An advanced purely-functional programming language

Lean

Clean up your Live Photos

Landing page //
2023-05-01

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

Landing page //
2021-08-03

Haskell

Website: haskell.org
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Lean

Website: lean.tinywhale.net
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Haskell features and specs

Pure Functional Programming
Haskell emphasizes pure functional programming, meaning functions have no side effects. This leads to code that is easier to understand, test, and maintain.
Strong Type System
Haskell's type system is strong and expressive, allowing developers to catch many errors at compile time. This results in more reliable code.
Lazy Evaluation
Haskell uses lazy evaluation by default, which can lead to performance improvements by avoiding unnecessary computations and enabling the creation of infinite data structures.
Immutability
In Haskell, data is immutable by default. This leads to simpler reasoning about code behavior and reduces bugs related to mutable state.
High-Level Abstractions
Haskell provides powerful abstractions like monads, functors, and applicative functors, which can lead to more concise and expressive code.
Concurrency
Haskell has excellent support for concurrency and parallelism through its lightweight threading model and software transactional memory, making it suitable for concurrent applications.
Community and Libraries
Haskell has a dedicated community and a rich set of libraries and tools, which can help accelerate development and provide solutions to common problems.

Possible disadvantages of Haskell

Steep Learning Curve
Haskell has a steep learning curve, particularly for developers who are new to functional programming or coming from imperative and object-oriented backgrounds.
Performance Concerns
While Haskell can be efficient, its performance can sometimes lag behind other languages like C++ or Rust for certain use cases, especially those requiring low-level optimization.
Limited Industry Adoption
Haskell is not as widely adopted in industry compared to languages like Java, Python, or JavaScript, which can limit job opportunities and community size.
Compilation Times
Haskell's compilation times can be long, especially for large projects, which can slow down the development process.
Tooling and IDE Support
While improving, the tooling and IDE support for Haskell is not as mature as for some other popular languages, potentially affecting developer productivity.
Complexity of Advanced Features
Some of Haskell's advanced features, such as monads and type-level programming, can be complex and difficult to master, which can be a barrier for new developers.
Library Gaps
Although Haskell has many libraries, there might be gaps or less mature libraries for some specific use cases compared to more mainstream languages.

Lean features and specs

No features have been listed yet.

Haskell videos

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Functional Programming & Haskell - Computerphile

Lean videos

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Substance Review: Lean

Category Popularity

0-100% (relative to Haskell and Lean)

Lean

Programming Language

86 86%

Programming Language

14% 14

OOP

80 80%

OOP

20% 20

Generic Programming Language

76 76%

Generic Programming Language

24% 24

Learning Resources

100 100%

Learning Resources

0% 0

User comments

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Reviews

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

Haskell Reviews

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Lean Reviews

22 Best Wrike Alternatives For Project Management in 2020 (Free & Paid)

Pros: Emphasizing optimization and eliminating waste for engineers, Leankit embraces Lean project management. It incorporates visualization boards (the Kanban approach) to help you quickly see the status of all your project tasks.

Source: www.workzone.com

Social recommendations and mentions

Based on our record, Haskell seems to be more popular. It has been mentiond 21 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.

Haskell mentions (21)

Is there a programming language that will blow my mind?
Haskell - a general-purpose functional language with many unique properties (purely functional, lazy, expressive types, STM, etc). You mentioned you dabbled in Haskell, why not try it again? (I've written about 7 things I learned from Haskell, and my book is linked at them bottom if you're interested :) ). Source: almost 2 years ago
Where to go from here?
Where you go is entirely up to you. According to haskell.org, Haskell jobs are a-plenty. sigh. Source: about 2 years ago
Haskell.org now has "Get Started" page!
Should they be part of haskell.org or something else? Source: over 2 years ago
Haskell.org now has "Get Started" page!
Haskell.org now has a big purple Get Started button that takes you to a nice short guide (haskell.org/get-started) that quickly provides all the basic info to get going with Haskell. It is aimed for beginners, to reduce choice fatigue and to give them a clear, official path to get going. Source: over 2 years ago
dev environment for windows
I just jumped into the wiki "Write Yourself a Scheme in 48 hours" which looks pretty good. (although some of the text explanation is hard to understand without context).. I used cabal to set up the starter project. Sublime editor seems to work OK and I just use the git Bash shell on windows to compile the program directly on the command line. So maybe this is all good enough for now (?). It seems installing... Source: over 2 years ago