Idris
Idris is a purely-functional programming language with dependent types, optional lazy evaluation, and features such as a totality checker. Idris may be used as a proof assistant, but it is designed to be a general-purpose programming language similar to Haskell.
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About Idris
Idris is a general purpose pure functional programming language with dependent types. Dependent types allow types to be predicated on values, meaning that some aspects of a program’s behaviour can be specified precisely in the type. It is compiled, with eager evaluation. Its features are influenced by Haskell and ML, and include:
- Full dependent types with dependent pattern matching
- Simple foreign function interface (to C)
- Compiler-supported interactive editing: the compiler helps you write code using the types
- where clauses, with rule, simple case expressions, pattern matching let and lambda bindings
- Dependent records with projection and update
- Interfaces (similar to type classes in Haskell)
- Type-driven overloading resolution
- do notation and idiom brackets
- indentation significant syntax
- Extensible syntax
- Cumulative universes
- Totality checking
- Hugs style interactive environment
Key Features of Idris
Dependently typed
Safety first! Strong guarantees about the correctness of programs at compile time.
Purely functional
Inspired by lambda calculus, scopes and loops are expressed by defining and calling functions.
Type classes
Categorising types into classes provides type-safe overloading.
Multithreaded
Data being immutable allows for safer and easier-to-reason-about concurrency.
Compact
Idris supplies a small number of general-purpose features.
Innovative
Idris is an actively-developed research testbed
Dependently typed
Safety first! Strong guarantees about the correctness of programs at compile time.
Purely functional
Inspired by lambda calculus, scopes and loops are expressed by defining and calling functions.
Type classes
Categorising types into classes provides type-safe overloading.
Multithreaded
Data being immutable allows for safer and easier-to-reason-about concurrency.
Compact
Idris supplies a small number of general-purpose features.
Innovative
Idris is an actively-developed research testbed
