{"id":192724,"date":"2025-01-31T06:35:00","date_gmt":"2025-01-31T05:35:00","guid":{"rendered":"https:\/\/liora.io\/en\/?p=192724"},"modified":"2026-02-06T07:49:44","modified_gmt":"2026-02-06T06:49:44","slug":"introduction-to-golang-development","status":"publish","type":"post","link":"https:\/\/liora.io\/en\/introduction-to-golang-development","title":{"rendered":"An Introduction to Golang development"},"content":{"rendered":"<b>Golang, often simply referred to as Go, is an open-source programming language developed by Google and released in 2009. Crafted by Robert Griesemer, Rob Pike, and Ken Thompson, this language is designed to provide a fast, efficient, and easily maintainable solution for modern software development, particularly in the realms of distributed systems, cloud, and back-end infrastructures.<\/b>\n\n<style><br \/>\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\n<figure>\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"617\" height=\"349\" src=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/createurs-golang.webp\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/createurs-golang.webp 617w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/createurs-golang-300x170.webp 300w\" sizes=\"(max-width: 617px) 100vw, 617px\"><figcaption>The three creators of Go, from left to right: Robert Griesemer, Rob Pike, and Ken Thompson<\/figcaption><\/figure>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/\">More about Golang<\/a><\/div><\/div>\n\n\n<style><br \/>\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style>\n<h3>Which application domains is it suited for?<\/h3>\nThe Go language holds particular appeal in various domains, notably:\n<ul>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cloud and distributed systems<\/b>: Go is often employed in cloud computing environments, where it is especially appreciated for cloud-native applications and microservices.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Back-end infrastructures<\/b>: As a highly performant compiled language, Go is an excellent choice for the back-end of large-scale platforms, such as data management systems and APIs.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Web services<\/b>: Numerous companies utilize it to create Go programs that are both reliable and scalable, like <a href=\"https:\/\/liora.io\/en\/docker-course-learning-to-use-the-container-platform\">Docker<\/a> or <a href=\"https:\/\/liora.io\/en\/kubernetes-training-learn-how-to-use-this-orchestration-tool\">Kubernetes<\/a>.<\/li>\n<\/ul>\n<h3>What are its advantages and disadvantages?<\/h3>\nGolang provides numerous advantages, yet it also has disadvantages that are important to weigh.\n<h4>Advantages<\/h4>\n<img decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image1.png\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image1.png 512w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image1-300x300.png 300w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image1-150x150.png 150w\" sizes=\"(max-width: 512px) 100vw, 512px\">\n<h4>Disadvantages<\/h4>\n<img decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image4.png\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image4.png 512w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image4-300x300.png 300w, https:\/\/liora.io\/app\/uploads\/sites\/9\/2025\/01\/image4-150x150.png 150w\" sizes=\"(max-width: 512px) 100vw, 512px\">\n\n<b>Simplicity<\/b>: Its syntax is direct, clear, and easy to read.\n\n<b>Lack of generics<\/b>: Up until recently, Go did not support generics, which could complicate the handling of some data structures.\n\n<b>High performance<\/b>: As a compiled language, Go is quick in execution, rivaling the performance levels of <a href=\"https:\/\/liora.io\/en\/the-characteristics-of-the-c-language\">C<\/a> or <a href=\"https:\/\/liora.io\/en\/c-what-is-this-computer-language-for\">C++<\/a>.\n\n<b>Primitive syntax<\/b>: Its simplicity can have downsides. For instance, the language lacks certain advanced abstractions present in other languages.\n\n<b>Concurrency management<\/b>: Goroutines offer a powerful mechanism for effective and simple concurrency.\n\n<b>Error handling<\/b>: Error handling is deliberately verbose, potentially making Go code longer and harder to read.\n\n<b>Cross-compilation<\/b>: Go simplifies the process of compiling source code for multiple platforms.\n\n<b>Rich library ecosystem<\/b>: It possesses a robust ecosystem of libraries and tools.\n\n<a href=\"\/en\/courses\/cloud-dev\/devops-engineer\">\nTraining in DevOps Engineering\n<\/a>\n<h3>What is the structure of the language?<\/h3>\nGo\u2019s syntax is relatively similar to that of C.\n<h4><font size=\"4\">Packages<\/font><\/h4>\nA package is a unit of modularity and distribution. Every Go file is associated with a package, and packages enable code to be reused in a structured manner.\n<ul>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>package main<\/b>: This specific package designates the entry point of an executable program. If you&#8217;re developing an application, it must incorporate the main package.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\">Other packages can be imported to provide additional functionalities, like fmt for handling input\/output.<\/li>\n<\/ul>\n<h4><font size=\"4\">Imports<\/font><\/h4>\nImports in Go facilitate the use of external packages or those from the standard library to enhance your program\u2019s features.\n\nFor instance, the following code imports a package (<i>fmt<\/i>) from the standard library:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>import \"fmt\"<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\nMultiple imports can be declared as follows:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>import (\n    \"fmt\"\n    \"time\"\n)\n<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n<h4><font size=\"4\">Functions<\/font><\/h4>\nFunctions in Go are blocks of code designed to complete specific tasks. The main function is compulsory as it represents the starting point of any Go program.\n\nThe following function, named <i>Hello<\/i>, takes a name as a parameter and returns a greeting:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>func hello(name string) string {\n    return \"Hello, \" + name\n}<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n<h4><font size=\"4\">Variables<\/font><\/h4>\nVariables are declared using the <b>var<\/b> keyword, but they can also be defined more concisely using the <strong>:<\/strong><strong>=<\/strong> operator for implicit declaration.\n\nThe following example demonstrates a first variable explicitly declared as a string, and a second implicitly declared as an integer.\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>var message string = \"Hello World!\"\nnombre := 42<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/cloud-dev\/devops-engineer\">Become an expert in DevOps Engineering<\/a><\/div><\/div>\n\n<h4><font size=\"4\">Typing<\/font><\/h4>\nGo is a statically typed language: each variable is determined at compile time.\n<h4><font size=\"4\">Control flow<\/font><\/h4>\nIn Go, control flow includes classic constructs like <b>if\u2026else, for<\/b> and <b>switch<\/b>. However, it doesn&#8217;t have a <b>while<\/b> loop, although <b>for<\/b> can serve a similar purpose.\n\nHere, the loop prints numbers from 0 to 9:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>for i := 0; i < 10; i++ {\n    fmt.Println(i)\n}<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\nThe following <i>if<\/i> statement indicates whether the number is even or odd:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>number := 7\nif number%2 == 0 {\n    fmt.Println(\"The number is even\")\n} else {\n    fmt.Println(\"The number is odd\")\n}<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\nThe following <i>switch<\/i> statement evaluates the value in the variable <i>day<\/i> and executes the corresponding block:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>day := \"tuesday\"\nswitch day {\ncase \"monday\":\n    fmt.Println(\"Start of the week\")\ncase \"tuesday\":\n    fmt.Println(\"Second day of the week\")\ncase \"wednesday\":\n    fmt.Println(\"Middle of the week\")\ndefault:\n    fmt.Println(\"Day not specified\")\n}<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n<h4><font size=\"4\">Data structures<\/font><\/h4>\nThere are several possible data structures, such as arrays, slices, maps, and structs.\n<ul>\n \t<li><b>Slices<\/b> allow for flexible handling of data sequences:<\/li>\n<\/ul>\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>numbers := []int{1, 2, 3, 4, 5}\nfmt.Println(numbers)<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n<ul>\n \t<li><b>Maps<\/b> are a collection of key-value pairs, akin to dictionaries in other languages:<\/li>\n<\/ul>\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>capitals := map[string]string{\"France\": \"Paris\", \"Italy\": \"Roma\"}\nfmt.Println(capitals[\"France\"])<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/\">Discover our courses<\/a><\/div><\/div>\n\n<h4><font size=\"4\">Basic commands<\/font><\/h4>\nGolang includes several basic commands that facilitate the management and execution of code:\n<ul>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>go fmt<\/b>: Automatically formats Go code for improved readability.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>go run<\/b>: Compiles and runs Go code directly.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>go test<\/b>: Provides an integrated framework for writing and executing unit tests.<\/li>\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><b>go build<\/b>: Compiles the source code to produce an executable.<\/li>\n<\/ul>\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>capitals := map[string]string{\"France\": \"Paris\", \"Italy\": \"Roma\"}\nfmt.Println(capitals[\"France\"])<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\n<h3>What are Goroutines?<\/h3>\nOne of Go\u2019s most powerful features is its ability to manage concurrency with goroutines. These are functions that run concurrently with the main program. To start a goroutine, simply prefix a function call with the <b>go<\/b> keyword.\n\nHere is an example:\n<pre data-line=\"\">\t\t\t\t<code readonly=\"true\">\n\t\t\t\t\t<xmp>package main\nimport (\n    \"fmt\"\n    \"time\"\n)\nfunc worker(mytask string) {\n    for i := 0; i < 3; i++ {\n        fmt.Printf(\"%s : iteration %dn\", mytask, i)\n        time.Sleep(500 * time.Millisecond)\n    }\n}\nfunc main() {\n    go worker(\"Task1\")\n    go worker(\"Task2\")\n    worker(\"Main task\")\n    \/\/ Waiting for goroutine to end\n    time.Sleep(2 * time.Second)\n}<\/xmp>\n\t\t\t\t<\/code>\n<\/pre>\nThe goroutines <i>Task1<\/i> and <i>Task2<\/i> operate simultaneously with <i>Main task<\/i>.\n<h3>Conclusion<\/h3>\n<a href=\"https:\/\/liora.io\/en\/golang-vs-python\">Golang is a robust language<\/a>. Its straightforwardness, efficient concurrency management via goroutines, and the quality of its tools and libraries make it an appealing option for a wide range of modern projects.\n\n<a href=\"\/en\/courses\/data-ai\/\">\nFind a course for you\n<\/a>","protected":false},"excerpt":{"rendered":"<p>Golang, often simply referred to as Go, is an open-source programming language developed by Google and released in 2009. Crafted by Robert Griesemer, Rob Pike, and Ken Thompson, this language is designed to provide a fast, efficient, and easily maintainable solution for modern software development, particularly in the realms of distributed systems, cloud, and back-end [&hellip;]<\/p>\n","protected":false},"author":74,"featured_media":192726,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":false,"editor_notices":[],"footnotes":""},"categories":[2434],"class_list":["post-192724","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-dev"],"acf":[],"_links":{"self":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/192724","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/comments?post=192724"}],"version-history":[{"count":5,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/192724\/revisions"}],"predecessor-version":[{"id":205607,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/192724\/revisions\/205607"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media\/192726"}],"wp:attachment":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media?parent=192724"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/categories?post=192724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}