How to resolve the algorithm String prepend step by step in the Haskell programming language

Published on 7 June 2024 03:52 AM
#Haskell

How to resolve the algorithm String prepend step by step in the Haskell programming language

Table of Contents

Problem Statement

Create a string variable equal to any text value. Prepend the string variable with another string literal. If your language supports any idiomatic ways to do this without referring to the variable twice in one expression, include such solutions.

To illustrate the operation, show the content of the variable.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm String prepend step by step in the Haskell programming language

The Haskell code defines a function f using lambda syntax, where it's defined as the concatenation of its argument with the string " World!".

When the function is called with the argument "Hello" the result is the string "Hello World!".

Here's a breakdown of the code:

  1. let f = (++" World!"): Defines a function f using lambda syntax. Lambda syntax is a concise way to define anonymous functions. In this case, the function takes a single argument and returns its concatenation with the string " World!". ++ is the concatenation operator in Haskell.

  2. f "Hello": Calls the function f with the argument "Hello". This is an application of the function f to the argument "Hello".

  3. The result of the function application is the string "Hello World!". This is displayed in the console when the expression is evaluated.

Source code in the haskell programming language

Prelude> let f = (++" World!")
Prelude> f "Hello"

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