Home/ Questions/Q 503389
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T06:23:21+00:00

What kind of problems is better solved in Prolog than in Haskell? What are

  • 0

What kind of problems is better solved in Prolog than in Haskell? What are the main differences between these two languages?

Edit

Is there a Haskell library (kind of a logical solver) that can mimic Prolog functionality?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Prolog is mainly a language targeted at logical problems, especially from the AI and linguistic fields. Haskell is more of a general-purpose language.

    Prolog is declarative (logical) language, what makes it easier to state logical problems in it. Haskell is a functional language and hence much better suited to computational problems.

    Wikipedia on declarative programming:

    In computer science, declarative
    programming is a programming paradigm
    that expresses the logic of a
    computation without describing its
    control flow. It attempts to minimize
    or eliminate side effects by
    describing what the program should
    accomplish, rather than describing how
    to go about accomplishing it. This is
    in contrast from imperative
    programming, which requires a detailed
    description of the algorithm to be
    run.

    Declarative programming consider
    programs as theories of a formal
    logic, and computations as deductions
    in that logic space. Declarative
    programming has become of particular
    interest recently, as it may greatly
    simplify writing parallel programs.

    Wikipedia on functional programming:

    In computer science, functional
    programming is a programming paradigm
    that treats computation as the
    evaluation of mathematical functions
    and avoids state and mutable data. It
    emphasizes the application of
    functions, in contrast to the
    imperative programming style, which
    emphasizes changes in state.
    Functional programming has its roots
    in the lambda calculus, a formal
    system developed in the 1930s to
    investigate function definition,
    function application, and recursion.
    Many functional programming languages
    can be viewed as embellishments to the
    lambda calculus.

    In short a declarative language declares a set of rules about what outputs should result from which inputs and uses those rules to deduce an output from an input, while a functional language declares a set of mathematical or logical functions which define how input is translated to output.

    As for the ADDED question : none that I know of but you can either translate Haskell to Prolog, or implement Prolog in Haskell 🙂

    • 0