How to install Idris on Ubuntu?

You can install Idris via package managers like apt or build from source. The Idris Wiki provides detailed instructions, including using Hackage for stable releases. For the latest development version, refer to the build guide in the repository's INSTALL.md file.

Idris vs Agda: which is better for dependent types?

Idris is designed as a general-purpose language with practical applications, while Agda is more focused on theorem proving and formal verification. Idris offers better tooling for software development, but Agda might be preferred for pure mathematical proofs.

Can Idris be used for backend web services?

Yes, Idris can compile to C or JavaScript, allowing backend development. However, the ecosystem lacks mature web frameworks, so you may need to implement more functionality from scratch compared to languages like Node.js or Go.

What are the performance implications of using dependent types in Idris?

Dependent types can introduce compile-time overhead and potentially affect runtime performance due to erased proofs, but the C code generator helps optimize native execution. For critical performance, profiling and manual optimizations might be necessary.

How to write a simple program with dependent types in Idris?

Start by defining dependent types like vectors with fixed lengths. Use the Idris REPL to interactively type-check your code. The official documentation and tutorials on the Idris website provide examples, such as creating length-indexed lists.

Is Idris suitable for game development?

Idris could be used for game logic verification, but its limited libraries and performance considerations make it less ideal compared to established engines like Unity or Unreal. It's better suited for components requiring high correctness guarantees.

Official repo — Functional Programming Language

What is Official repo?

Idris is a general-purpose functional programming language that features dependent types, allowing types to depend on values. This enables developers to write highly expressive type specifications that can enforce correctness properties at compile time, such as ensuring array bounds or protocol invariants. It aims to bring the benefits of verified programming to practical software development.

Target Audience

Developers and researchers interested in type-driven development, formal verification, and building highly reliable software with strong correctness guarantees, particularly in areas like systems programming, compilers, or security-critical applications.

Value Proposition

Idris offers a unique blend of dependent types in a general-purpose language, making it possible to catch complex bugs at compile time while remaining usable for real-world projects. Its support for multiple code generators (C, JavaScript) allows targeting various platforms without sacrificing type safety.

A Dependently Typed Functional Programming Language

Use Cases

Best For

Developing software with formal correctness guarantees
Learning and experimenting with dependent type systems
Building compilers or language tools that require precise type checking
Creating verified algorithms or data structures
Teaching advanced type theory concepts in a practical setting
Writing high-assurance systems where runtime errors are unacceptable

Not Ideal For

Projects requiring rapid development with extensive third-party libraries or frameworks
Teams integrating with large, existing codebases in mainstream languages like Java or Python
Applications where runtime performance is critical and low-level optimization is needed beyond C code generation
New projects expecting long-term active maintenance and community support

Pros & Cons

Pros

Dependent Type System

Enables types to depend on values, allowing compile-time checks for properties like vector lengths, as highlighted in the key features for catching errors early.

Multiple Code Targets

Compiles to C for native executables and JavaScript for web environments, providing flexibility for deployment across different platforms, as noted in the code generation support.

Interactive Development Tools

Supports a REPL and interactive editing, facilitating exploration of types and proofs during coding, which enhances the development experience for verification tasks.

Extensible Architecture

Allows for custom code generators and language extensions, adapting to various needs beyond standard features, as mentioned in the extensible design.

Cons

Inactive Development

Idris 1 is no longer actively developed, with primary efforts shifted to Idris 2, limiting updates and long-term support for this version.

Steep Learning Curve

Dependent types require significant upfront investment in type theory, making it challenging for developers without a background in formal methods or advanced programming.

Limited Ecosystem

Has a smaller community and fewer third-party libraries compared to mainstream languages, which can hinder project development and resource availability.

What is Official repo?

Target Audience

Value Proposition

Use Cases

Best For

Developing software with formal correctness guarantees
Learning and experimenting with dependent type systems
Building compilers or language tools that require precise type checking
Creating verified algorithms or data structures
Teaching advanced type theory concepts in a practical setting
Writing high-assurance systems where runtime errors are unacceptable

Not Ideal For

Projects requiring rapid development with extensive third-party libraries or frameworks
Teams integrating with large, existing codebases in mainstream languages like Java or Python
Applications where runtime performance is critical and low-level optimization is needed beyond C code generation
New projects expecting long-term active maintenance and community support

Pros & Cons

Pros

Dependent Type System

Enables types to depend on values, allowing compile-time checks for properties like vector lengths, as highlighted in the key features for catching errors early.

Multiple Code Targets

Compiles to C for native executables and JavaScript for web environments, providing flexibility for deployment across different platforms, as noted in the code generation support.

Interactive Development Tools

Supports a REPL and interactive editing, facilitating exploration of types and proofs during coding, which enhances the development experience for verification tasks.

Extensible Architecture

Allows for custom code generators and language extensions, adapting to various needs beyond standard features, as mentioned in the extensible design.

Cons

Inactive Development

Idris 1 is no longer actively developed, with primary efforts shifted to Idris 2, limiting updates and long-term support for this version.

Steep Learning Curve

Dependent types require significant upfront investment in type theory, making it challenging for developers without a background in formal methods or advanced programming.

Limited Ecosystem

Has a smaller community and fewer third-party libraries compared to mainstream languages, which can hinder project development and resource availability.

Official repo

What is Official repo?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

Official repo

What is Official repo?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?