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This article mainly introduces how to write a Mini Game in Elixir language related knowledge, the content is detailed and easy to understand, easy to operate, has a certain reference value, I believe that you will get something after reading this article on how to write a Mini Game in Elixir language. Let's take a look.

Learn the Elixir programming language by writing a number guessing game and compare it with a language you know.

In order to better learn a new programming language, the best way is to pay attention to some common features of mainstream languages:

Variable

Expression.

Statement

These concepts are the basis of most programming languages. Because of these similarities, as long as you are familiar with one programming language, you can familiarize yourself with another programming language by comparing differences.

Another good way to learn a new programming language is to start writing a simple standard program. It allows you to focus on the language rather than the logic of the program itself. In this series of articles, we use the "guessing numbers" program, in which the computer selects a number between 1 and 100 and asks you to guess it. The program will loop until you correctly guess the number.

The program "guessing numbers" uses the following concepts of the programming language:

Variable

Input

Output

Conditional judgment

Cycle

This is an excellent practice for learning a new programming language.

Elixir implementation of guessing numbers

Elixir is a functional programming language designed to build dynamic types of stable maintainable applications. It runs on the same virtual machine as Erlang and absorbs many of the strengths of Erlang while having a simpler syntax.

You can write an Elixir version of the "guessing numbers" game to experience the language.

This is how I implement it:

Defmodule Guess do def guess () do random = Enum.random (1.. 100) IO.puts "Guess a number between 1 and 100" Guess.guess_loop (random) end def guess_loop (num) do data = IO.read (: stdio,: line) {guess, _ rest} = Integer.parse (data) cond do guess

IO.puts "Too low!" Guess_loop (num) guess > num-> IO.puts "Too high!" Guess_loop (num) true-> IO.puts "That's right!" End endend Guess.guess ()

Elixir assigns a value to the variable by listing the name of the variable followed by an = sign. For example, the expression random = 0 assigns a value of 0 to the random variable.

The code starts by defining a module. In the Elixir language, only modules can contain named functions.

The line that follows defines the entry function guess (), which is:

Call the Enum.random () function to get a random integer

Print game tips

Call a function executed by a loop

The rest of the game logic is implemented in the guess_loop () function.

The guess_loop () function uses tail recursion to implement the loop. There are several ways to implement loops in Elixir, and tail recursion is one of the more common ways. The last thing the guess_loop () function does is call itself.

The first line of the guess_loop () function reads the user input. The next line calls the parse () function to convert the input to an integer.

Cond expressions are Elixir versions of multibranched expressions. Unlike if/elif or if/elsif expressions in other languages, Elixir makes no difference to the first branch or the last one without a branch.

This cond expression has three branches: the result of a guess can be larger, smaller, or equal than a random number. The first two options output the direction of the inequality and then call guess_loop () recursively, and the loop returns to the beginning of the function. The last option outputs That's right, and the function is complete.

Output example

Now that you have written your Elixir code, you can run it to play the game of guessing numbers. Every time you execute this program, Elixir will choose a different random number, and you can guess until you find the correct answer:

$elixir guess.exsGuess a number between 1 and 10050Too high30Too high20Too high10Too low15Too high13Too low14That's right! This is the end of the article on "how to write a Mini Game in Elixir language". Thank you for reading! I believe that everyone has a certain understanding of "how to write a Mini Game in Elixir language". If you want to learn more, you are welcome to follow the industry information channel.

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