{"id":41013,"date":"2026-01-30T06:10:27","date_gmt":"2026-01-30T06:10:27","guid":{"rendered":"https:\/\/www.railscarma.com\/?p=41013"},"modified":"2026-01-30T06:10:32","modified_gmt":"2026-01-30T06:10:32","slug":"ruby-random-numbers-how-to-generate-them-with-examples","status":"publish","type":"post","link":"https:\/\/www.railscarma.com\/sv\/blogg\/ruby-random-numbers-how-to-generate-them-with-examples\/","title":{"rendered":"Ruby Random Numbers: How to Generate Them With Examples"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"41013\" class=\"elementor elementor-41013\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-374443a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"374443a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-57a6ff1\" data-id=\"57a6ff1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a9b7290 elementor-widget elementor-widget-text-editor\" data-id=\"a9b7290\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Random number generation is a fundamental concept in programming, and Ruby makes it both simple and powerful. From building games and simulations to generating test data, tokens, or randomized user experiences, random numbers play a crucial role in many Ruby and Ruby on Rails applications. Ruby provides built-in methods and classes that allow developers to generate random integers, floating-point numbers, reproducible sequences, and even cryptographically secure random values.<\/span><\/p><p><span style=\"font-weight: 400;\">In this guide, you\u2019ll learn how random numbers work in Ruby, explore different techniques to generate them, understand when to use each approach, and see practical examples you can apply in real-world projects.<\/span><\/p><h3><b>Understanding Randomness in Ruby<\/b><\/h3><p><span style=\"font-weight: 400;\">At its core, Ruby uses <\/span><b>pseudo-random number generation<\/b><span style=\"font-weight: 400;\">, meaning the numbers appear random but are generated using deterministic algorithms. These algorithms start from a value called a <\/span><b>seed<\/b><span style=\"font-weight: 400;\">, and based on that seed, Ruby produces a predictable sequence of numbers.<\/span><\/p><p><span style=\"font-weight: 400;\">This behavior is intentional and useful. It allows developers to:<\/span><\/p><ul><li><span style=\"font-weight: 400;\">Reproduce results for testing<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Control randomness when needed<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Generate secure randomness when required<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Ruby exposes this functionality mainly through:<\/span><\/p><ul><li><span style=\"font-weight: 400;\">Den <\/span><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\"> method<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Den <\/span><span style=\"font-weight: 400;\"><code>Random<\/code><\/span><span style=\"font-weight: 400;\"> klass<\/span><\/li><li><span style=\"font-weight: 400;\">Den <span style=\"font-weight: 400;\"><code>SecureRandom<\/code><\/span><span style=\"font-weight: 400;\"> modul<\/span><\/span><\/li><\/ul><h3><b>Anv\u00e4nder sig av <\/b><b><code>rand<\/code><\/b><b> in Ruby<\/b><\/h3><p><span style=\"font-weight: 400;\">The simplest way to generate random numbers in Ruby is with the <\/span><span style=\"font-weight: 400;\">rand<\/span><span style=\"font-weight: 400;\"> metod.<\/span><\/p><h4><b>Generating a Random Float<\/b><\/h4><p><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">This returns a floating-point number between <\/span><span style=\"font-weight: 400;\"><code>0.0&lt;\/code &gt;<\/code><\/span><span style=\"font-weight: 400;\"> (inclusive) and <\/span><span style=\"font-weight: 400;\"><code>1.0<\/code><\/span><span style=\"font-weight: 400;\"> (exclusive):<\/span><\/p><pre><span style=\"font-weight: 400;\"><code>0.734218973<\/code><\/span><\/pre><p><span style=\"font-weight: 400;\">This is useful for probability-based logic, simulations, or mathematical calculations.<\/span><\/p><h4><b>Generating a Random Integer<\/b><\/h4><p><span style=\"font-weight: 400;\">To generate a random integer less than a given number:<\/span><\/p><pre><span style=\"font-weight: 400;\"><code>rand(10)<\/code><\/span><\/pre><p><span style=\"font-weight: 400;\">Output will be an integer between <\/span><span style=\"font-weight: 400;\"><code>0<\/code><\/span><span style=\"font-weight: 400;\"> och <\/span><span style=\"font-weight: 400;\"><code>9<\/code><\/span><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Exempel:<\/span><\/p><pre><span style=\"font-weight: 400;\"><code>7<\/code><\/span><\/pre><h4><b>Generating Random Numbers Within a Range<\/b><\/h4><p><span style=\"font-weight: 400;\">Ruby allows you to generate random numbers within a specific range using range syntax:<\/span><\/p><pre><span style=\"font-weight: 400;\"><code>rand(1..10)<\/code><\/span><\/pre><p><span style=\"font-weight: 400;\">This returns an integer between <\/span><span style=\"font-weight: 400;\"><code>1<\/code><\/span><span style=\"font-weight: 400;\"> och <\/span><span style=\"font-weight: 400;\"><code>10<\/code><\/span><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">For floating-point ranges:<\/span><\/p><pre><span style=\"font-weight: 400;\"><code>rand(1.5..5.5)<\/code><\/span><\/pre><p><span style=\"font-weight: 400;\">This returns a float between <\/span><span style=\"font-weight: 400;\"><code>1.5<\/code><\/span><span style=\"font-weight: 400;\"> och <\/span><span style=\"font-weight: 400;\"><code>5.5<\/code><\/span><span style=\"font-weight: 400;\">.<\/span><\/p><h3><b>Common Use Cases for <\/b><b><code>rand<\/code><\/b><\/h3><ul><li><span style=\"font-weight: 400;\">Selecting a random item from a list<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Generating scores or points<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Creating simple game mechanics<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Simulating random events<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Exempel:<\/span><\/p><pre><span style=\"font-weight: 400;\">colors = [\"red\", \"blue\", \"green\", \"yellow\"]<\/span>\n<span style=\"font-weight: 400;\">random_color = colors[rand(colors.length)]<\/span><\/pre><h2><b>Anv\u00e4ndning av <\/b><b><code>Random<\/code><\/b><b> Class<\/b><\/h2><p><span style=\"font-weight: 400;\">Den <\/span><span style=\"font-weight: 400;\"><code>Random<\/code><\/span><span style=\"font-weight: 400;\"> class provides more control over random number generation. Instead of relying on Ruby\u2019s global random generator, you can create independent random number generators.<\/span><\/p><h3><b>Creating a Random Object<\/b><\/h3><p><span style=\"font-weight: 400;\"><code>random = Random.new<br \/>\n<\/code><\/span><span style=\"font-weight: 400;\"><code>random.rand(1..100)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">This is useful when:<\/span><\/p><ul><li><span style=\"font-weight: 400;\">You want isolated randomness<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">You are running simulations<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">You want reproducible behavior across systems<\/span><\/li><\/ul><h4><b>Seeding Random Generators<\/b><\/h4><p><span style=\"font-weight: 400;\">A <\/span><b>seed<\/b><span style=\"font-weight: 400;\"> defines the starting point for random number generation.<\/span><\/p><p><span style=\"font-weight: 400;\"><code>random = Random.new(1234)<\/code><br \/><\/span><span style=\"font-weight: 400;\"><code>random.rand(10)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Every time you run this code with the same seed, you\u2019ll get the same result.<\/span><\/p><p><span style=\"font-weight: 400;\">This is especially helpful for:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Testning<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fels\u00f6kning<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replaying simulations<\/span><\/li><\/ul><h2><b>Anv\u00e4nder sig av <\/b><b><code>srand<\/code><\/b><b> for Global Seeding<\/b><\/h2><p><span style=\"font-weight: 400;\">Ruby also provides the <\/span><span style=\"font-weight: 400;\"><code>srand<\/code><\/span><span style=\"font-weight: 400;\"> method to seed the global random generator:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>srand(100)<\/code><br \/><\/span><span style=\"font-weight: 400;\"><code>rand(1..10)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Calling <\/span><span style=\"font-weight: 400;\"><code>srand<\/code><\/span><span style=\"font-weight: 400;\"> ensures consistent output across executions.<\/span><\/p><p><span style=\"font-weight: 400;\">Example use case:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Automated tests<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Deterministic application behavior<\/span><\/li><\/ul><h3><b>Secure Random Numbers in Ruby<\/b><\/h3><p><span style=\"font-weight: 400;\">For security-sensitive applications, <\/span><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\"> is <\/span><b>not sufficient<\/b><span style=\"font-weight: 400;\">. Ruby provides the <\/span><span style=\"font-weight: 400;\"><code>SecureRandom<\/code><\/span><span style=\"font-weight: 400;\"> module for cryptographically secure random values.<\/span><\/p><h4><b>Anv\u00e4nder sig av <\/b><b><code>SecureRandom<\/code><\/b><\/h4><p><span style=\"font-weight: 400;\"><code>require 'securerandom'<\/code><br \/><\/span><span style=\"font-weight: 400;\"><code>SecureRandom.random_number(100)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">This generates a secure random integer between <\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\"> och <\/span><span style=\"font-weight: 400;\">99<\/span><span style=\"font-weight: 400;\">.<\/span><\/p><h4><b>Generating Secure Tokens<\/b><\/h4><p><span style=\"font-weight: 400;\"><code>SecureRandom.hex(16)<br \/>\n<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Example output:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>\"a3f9c7d2e4b8f1c6a7b9d0e3f4c5a1b2\"<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Other formats:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>SecureRandom.base64(16)<\/code><br \/><\/span><span style=\"font-weight: 400;\"><code>SecureRandom.uuid<\/code><\/span><\/p><h4><b>When to Use SecureRandom<\/b><\/h4><p><span style=\"font-weight: 400;\">Anv\u00e4ndning <\/span><span style=\"font-weight: 400;\"><code>SecureRandom<\/code><\/span><span style=\"font-weight: 400;\"> for:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Authentication tokens<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Password reset links<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">API keys<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Session identifiers<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Avoid using <\/span><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\"> for any security-related logic.<\/span><\/p><h3><b>Random Numbers in Ruby on Rails<\/b><\/h3><p><span style=\"font-weight: 400;\">Ruby on Rails applications frequently use random numbers in practical scenarios.<\/span><\/p><h4><b>Generating Friendly URLs or Tokens<\/b><\/h4><p><span style=\"font-weight: 400;\"><code>token = SecureRandom.urlsafe_base64(12)<\/code><\/span><\/p><h4><b>Random Record Selection<\/b><\/h4><p><span style=\"font-weight: 400;\"><code>User.order(\"RANDOM()\").first<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Note: This approach may not scale well for large datasets.<\/span><\/p><p><span style=\"font-weight: 400;\">Alternative:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>User.offset(rand(User.count)).first<\/code><\/span><\/p><h4><b>A\/B Testing and Feature Flags<\/b><\/h4><p><span style=\"font-weight: 400;\">Random numbers help distribute users across variants:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>variant = rand &lt; 0.5 ? \"A\" : \"B\"<\/code><\/span><\/p><h3><b>Randomness for Testing in Ruby<\/b><\/h3><p><span style=\"font-weight: 400;\">Randomness can cause flaky tests if not handled carefully. Ruby developers often combine randomness with seeds to ensure reliability.<\/span><\/p><h4><b>Example in RSpec<\/b><\/h4><p><span style=\"font-weight: 400;\"><code>srand(123)<\/code><br \/><\/span><span style=\"font-weight: 400;\"><code>expect(rand(10)).to eq(6)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">This ensures predictable test results.<\/span><\/p><p><span style=\"font-weight: 400;\">RSpec itself allows random test order execution:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>rspec --seed 12345<\/code><\/span><\/p><h3><b>Shuffling Arrays Randomly<\/b><\/h3><p><span style=\"font-weight: 400;\">Ruby makes it easy to shuffle collections:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>array.shuffle<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">To shuffle in place:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>array.shuffle!<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Exempel:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>[1, 2, 3, 4, 5].shuffle<\/code><\/span><\/p><h3><b>Sampling Random Elements<\/b><\/h3><p><span style=\"font-weight: 400;\"><code>array.sample<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">To sample multiple items:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>array.sample(3)<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Exempel:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>[\"apple\", \"banana\", \"cherry\"].sample<\/code><\/span><\/p><h3><b>Generating Random Booleans<\/b><\/h3><p><span style=\"font-weight: 400;\"><code>rand &lt; 0.5<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Eller:<\/span><\/p><p><span style=\"font-weight: 400;\"><code>[true, false].sample<\/code><\/span><\/p><p><span style=\"font-weight: 400;\">Useful for simulations, testing, and feature toggles.<\/span><\/p><h3><b>\u00d6verv\u00e4ganden om prestanda<\/b><\/h3><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\"> is fast and suitable for most applications<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><code>Random<\/code><\/span><span style=\"font-weight: 400;\"> is ideal for controlled randomness<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><code>SecureRandom<\/code><span style=\"font-weight: 400;\"> is slower but necessary for security<\/span><\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Choose the right tool based on the problem you\u2019re solving.<\/span><\/p><h3><b>Common Mistakes to Avoid<\/b><\/h3><p><span style=\"font-weight: 400;\">1. Using <\/span><span style=\"font-weight: 400;\">rand<\/span><span style=\"font-weight: 400;\"> for security-sensitive logic<\/span><\/p><p><span style=\"font-weight: 400;\">2. Forgetting to seed randomness in tests<\/span><\/p><p><span style=\"font-weight: 400;\">3. Overusing database-level random queries<\/span><\/p><p><span style=\"font-weight: 400;\">4. Assuming random results are truly unpredictable<\/span><\/p><p><span style=\"font-weight: 400;\">Understanding these pitfalls helps you write more reliable Ruby code.<\/span><\/p><h3><b>Best Practices for Random Number Generation in Ruby<\/b><\/h3><ul><li><span style=\"font-weight: 400;\">Anv\u00e4ndning <\/span><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\"> for simple randomness<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Anv\u00e4ndning <\/span><span style=\"font-weight: 400;\"><code>Random.new(seed)<\/code><\/span><span style=\"font-weight: 400;\"> for reproducibility<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Anv\u00e4ndning <\/span><span style=\"font-weight: 400;\"><code>SecureRandom<\/code><\/span><span style=\"font-weight: 400;\"> for authentication and security<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Always document seeded randomness<\/span><span style=\"font-weight: 400;\"><br \/><\/span><\/li><li><span style=\"font-weight: 400;\">Test randomness-based features carefully<\/span><\/li><\/ul><h2><b>Slutsats<\/b><\/h2><p><span style=\"font-weight: 400;\">Random number generation is a powerful feature in Ruby that supports a wide range of use cases\u2014from simple application logic and testing to security-critical functionality. Ruby\u2019s built-in tools such as <\/span><span style=\"font-weight: 400;\"><code>rand<\/code><\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\"><code>Random<\/code><\/span><span style=\"font-weight: 400;\">, och <\/span><span style=\"font-weight: 400;\"><code>SecureRandom<\/code><\/span><span style=\"font-weight: 400;\"> provide developers with the flexibility, control, and reliability needed to implement randomness correctly. When used with best practices, these tools help ensure predictable testing, scalable performance, and secure application behavior.<\/span><\/p><p><span style=\"font-weight: 400;\">P\u00e5 <\/span><a href=\"https:\/\/www.railscarma.com\/sv\"><b>RailsCarma<\/b><\/a><span style=\"font-weight: 400;\">, our <\/span><a href=\"https:\/\/www.railscarma.com\/sv\/hyra-ruby-on-rails-utvecklare\/\"><span style=\"font-weight: 400;\">Ruby on Rails experts<\/span><\/a><span style=\"font-weight: 400;\"> apply these principles to build robust, high-performance applications that are secure, scalable, and production-ready. 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From building games and simulations to generating test data, tokens, or randomized user experiences, random numbers play a crucial role in many Ruby and Ruby on Rails applications. Ruby provides built-in methods and classes that allow developers to &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.railscarma.com\/sv\/blogg\/ruby-regex-match-guide-with-examples\/\"> <span class=\"screen-reader-text\">Ruby Regex Match Guide (2026) med exempel<\/span> L\u00e4s mer \u00bb<\/a><\/p>","protected":false},"author":11,"featured_media":41095,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1224],"tags":[],"class_list":["post-41013","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ruby Random Numbers: How to Generate Them With Examples<\/title>\n<meta name=\"description\" content=\"Understand Ruby random numbers with easy examples. Learn how to use rand, ranges, and seeds to generate reliable random values.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.railscarma.com\/sv\/blogg\/ruby-random-numbers-how-to-generate-them-with-examples\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ruby Random Numbers: How to Generate Them With Examples\" \/>\n<meta property=\"og:description\" content=\"Understand Ruby random numbers with easy examples. Learn how to use rand, ranges, and seeds to generate reliable random values.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.railscarma.com\/sv\/blogg\/ruby-random-numbers-how-to-generate-them-with-examples\/\" \/>\n<meta property=\"og:site_name\" content=\"RailsCarma - Ruby on Rails Development Company specializing in Offshore Development\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/RailsCarma\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-30T06:10:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-30T06:10:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2026\/01\/Ruby-Random-Numbers-How-to-Generate-Them-With-Examples.png\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"ashish\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@railscarma\" \/>\n<meta name=\"twitter:site\" content=\"@railscarma\" \/>\n<meta name=\"twitter:label1\" content=\"Skriven av\" \/>\n\t<meta name=\"twitter:data1\" content=\"ashish\" \/>\n\t<meta name=\"twitter:label2\" content=\"Ber\u00e4knad l\u00e4stid\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/\"},\"author\":{\"name\":\"ashish\",\"@id\":\"https:\/\/www.railscarma.com\/#\/schema\/person\/9699b14852b308edfeb03096b33c7a7a\"},\"headline\":\"Ruby Random Numbers: How to Generate Them With Examples\",\"datePublished\":\"2026-01-30T06:10:27+00:00\",\"dateModified\":\"2026-01-30T06:10:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/\"},\"wordCount\":814,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.railscarma.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2026\/01\/Ruby-Random-Numbers-How-to-Generate-Them-With-Examples.png\",\"articleSection\":[\"Blogs\"],\"inLanguage\":\"sv-SE\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/\",\"url\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/\",\"name\":\"Ruby Random Numbers: How to Generate Them With Examples\",\"isPartOf\":{\"@id\":\"https:\/\/www.railscarma.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.railscarma.com\/blog\/ruby-random-numbers-how-to-generate-them-with-examples\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.railscarma.com\/wp-content\/uploads\/2026\/01\/Ruby-Random-Numbers-How-to-Generate-Them-With-Examples.png\",\"datePublished\":\"2026-01-30T06:10:27+00:00\",\"dateModified\":\"2026-01-30T06:10:32+00:00\",\"description\":\"Understand Ruby random numbers with easy examples. 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