# Activity Plan for Week 2 ## Summary In Week 2 of the Functional Programming module, we will: 1. study the basic Type Classes and Instances 2. understand different ways of writing Functions (composing, guarded equations, pattern matching, and lambda expressions) 3. look at Operators and Sections: ways to turn infix function symbols into functions […]
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# Interpreter A video on this section can be found [here](https://bham.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=9a8291ac-6408-426b-8da2-ac85012e8c54). “`haskell module Interpreter where import AbstractSyntax “` We explain how to run programs written in abstract syntax: “` | initial | storage v final program tree +——-+——–+ storage ——————–>| run | ——–> (AbstractSyntax.hs) +—————-+ “` ## Representation of the storage There are several ways
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PROGRAMMING IN HASKELL Chapter 3 – Types and Classes 0 What is a Type? A type is a name for a collection of related values. For example, in Haskell the basic type Bool contains the two logical values: False True 1 Type Errors Applying a function to one or more arguments of the wrong type
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PROGRAMMING IN HASKELL Chapter 2 – First Steps 0 Glasgow Haskell Compiler ❚ GHC is the leading implementation of Haskell, and comprises a compiler and interpreter; ❚ The interactive nature of the interpreter makes it well suited for teaching and prototyping; ❚ GHC is freely available from: www.haskell.org/platform 1 Starting GHCi The interpreter can be
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# Type classes in more detail ## Some Haskell options we will use in this file We’ll be using the following Haskell option to have more flexibility in the ways we are allowed to define things: “`haskell {-# Language FlexibleInstances #-} “` We will also use the option below “`haskell {-# OPTIONS_GHC -fwarn-incomplete-patterns #-} “`
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# Abstract syntax A video on this section can be found [here](https://bham.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=78c83470-4c37-4279-bef8-ac85012e8be3). The operations are listed in the order of precedence as in the languages C and C++ (from low to high), where all the operations in the same line have the same precedence, but this is important for [parsing](Parser.md) only: “`haskell module AbstractSyntax where
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— Tree relabelling example from chapter 12 of Programming in Haskell, — , Cambridge University Press, 2016. — The state monad type State = Int newtype ST a = S (State -> (a,State)) app :: ST a -> State -> (a,State) app (S st) x = st x instance Functor ST where — fmap ::
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#! /bin/bash MDTOHS=../../../Resources/mdtohs.hs runhaskell ${MDTOHS} < Interpreter.md > Interpreter.hs runhaskell ${MDTOHS} < Parser.md > Parser.hs runhaskell ${MDTOHS} < Runxy.md > Runxy.hs runhaskell ${MDTOHS} < AbstractSyntax.md > AbstractSyntax.hs
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/* This is a Kotlin version of the Haskell “Game of Life” program. https://kotlinlang.org/ Kotkin is Google’s preferred language for developing Android applications. https://developer.android.com/kotlin Kotlin is now Google’s preferred language for Android app development Kotlin supports functional programming, as illustrated in this direct translation of the Haskell program https://git.cs.bham.ac.uk/mhe/fp-learning-2021-2022/blob/master/LectureNotes/Life.md Try to run it from the
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— Expression example from chapter 13 of Programming in Haskell, — , Cambridge University Press, 2016. import Parsing expr :: Parser Int expr = do t
程序代做CS代考 Haskell — Expression example from chapter 13 of Programming in Haskell, Read More »