Online Haskell to Gleam Converter
Click to select or drop your input code file here.
You can also type the input code below.
How to use this tool?
This free online converter lets you convert code from Haskell to Gleam in a click of a button. To use this converter, take the following steps -
- Type or paste your Haskell code in the input box.
- Click the convert button.
- The resulting Gleam code from the conversion will be displayed in the output box.
Key differences between Haskell and Gleam
| Characteristic | Haskell | Gleam |
|---|---|---|
| Syntax | Uses a concise, indentation-sensitive syntax with significant whitespace and infix operators; can be challenging for beginners. | Has a simple, ML-inspired syntax with clear structure and explicit delimiters; designed for readability and approachability. |
| Paradigm | Purely functional programming with lazy evaluation and strong emphasis on immutability. | Functional programming with strict (eager) evaluation, designed for simplicity and practical use on the BEAM (Erlang VM). |
| Typing | Statically typed with advanced type system features like type inference, type classes, and higher-kinded types. | Statically typed with type inference and algebraic data types, but with a simpler type system than Haskell. |
| Performance | Compiled to native code; performance can be high but may be affected by laziness and garbage collection. | Compiles to Erlang or JavaScript; inherits the concurrency and reliability of the BEAM, but not as fast as native code. |
| Libraries and frameworks | Rich ecosystem with many libraries and frameworks, especially for academic, research, and some web applications. | Smaller but growing ecosystem; can interoperate with Erlang and Elixir libraries, expanding available options. |
| Community and support | Large, established community with extensive documentation, tutorials, and active forums. | Smaller, newer community; friendly and active, but with fewer resources and less mature support. |
| Learning curve | Steep learning curve due to advanced type system, lazy evaluation, and unique syntax. | Gentler learning curve, designed to be beginner-friendly and easy to pick up for those new to functional programming. |
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