{"id":4393,"date":"2020-11-20T14:43:37","date_gmt":"2020-11-20T09:13:37","guid":{"rendered":"https:\/\/golangbyexamples.com\/?p=4393"},"modified":"2020-11-20T14:44:03","modified_gmt":"2020-11-20T09:14:03","slug":"import-same-package-name-golang","status":"publish","type":"post","link":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/","title":{"rendered":"Import same package name or Aliasing while importing packages in Go (Golang)"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_17 counter-hierarchy counter-decimal ez-toc-light-blue\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><i class=\"ez-toc-glyphicon ez-toc-icon-toggle\"><\/i><\/a><\/span><\/div>\n<nav><ul class=\"ez-toc-list ez-toc-list-level-1\"><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#Overview\" title=\"Overview\">Overview<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-1\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#Example\" title=\"Example\">Example<\/a><\/li><\/ul><\/nav><\/div>\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overview\"><\/span><strong>Overview<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\">Aliasing in importing packages means give a different name to the imported package. Syntax for it is<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">import <new_name> <directory_path><\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">Above statement means that whatever package is present at directory &lt;directory_path> import that package with name &lt;new_name>. Aliasing is useful for giving<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>Giving a more relevant name to the imported package in the current context.<\/li><\/ul>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>When two different import path contains the same package name then import one of them as a different name to prevent conflict.<\/li><\/ul>\n\n\n\n<h1 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example\"><\/span><strong>Example<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<p class=\"has-medium-font-size\">Create a module with import path as <a href=\"http:\/\/sample.com\">sample.com<\/a>\/learn<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">go mod init sample.com\/learn<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">In below example we created two directory math and math2.<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>math directory contains file math.go with package declaration as<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package math<\/code><\/pre>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\"><li>math2 directory contains file math2.go with package declaration as<\/li><\/ul>\n\n\n\n<p class=\"has-medium-font-size\">Notice that package name (i.e <strong>math<\/strong>) is same in folder <strong>math<\/strong> as well in folder <strong>math2. <\/strong>So both folder <strong>math2<\/strong> and <strong>math<\/strong> contains the same package which is <strong>math. <\/strong>Since both directory have the same package name, aliasing is the only way to use both the package in the same file. This is how we alias and use both the package in main.go<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">import (\n    \"sample.com\/learn\/math\"\n    math2 \"sample.com\/learn\/math2\"\n)<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">We alias <strong>math<\/strong> package present <strong>&#8220;sample.com\/learn\/math2&#8221;<\/strong> to <strong>math2. <\/strong>If we haven&#8217;t done that then GO will raise a compilation issue as it cannot import package with same name from two different folders. This one of the advantage of using alias.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Let&#8217;s see full working code<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>go.mod<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">module sameple.com\/learn\n\ngo 1.14<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>learn\/math2\/math2.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package math\nfunc Subtract(a, b int) int {\n    return a - b\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>learn\/math\/math.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package math\nfunc Add(a, b int) int {\n    return a + b\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\"><strong>learn\/main.go<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">package main\nimport (\n    \"fmt\"\n    \"sample.com\/learn\/math\"\n    math2 \"sample.com\/learn\/math2\"\n)\nfunc main() {\n    fmt.Println(math.Add(2, 1))\n    fmt.Println(math2.Subtract(2, 1))\n}<\/code><\/pre>\n\n\n\n<p class=\"has-medium-font-size\">Let&#8217;s run this program<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-go\">go install\nlearn $ learn\n3\n1<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Table of Contents OverviewExample Overview Aliasing in importing packages means give a different name to the imported package. Syntax for it is Above statement means that whatever package is present at directory&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[1],"tags":[3,4],"class_list":["post-4393","post","type-post","status-publish","format-standard","hentry","category-tech","tag-go","tag-golang"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example\" \/>\n<meta property=\"og:description\" content=\"Table of Contents OverviewExample Overview Aliasing in importing packages means give a different name to the imported package. Syntax for it is Above statement means that whatever package is present at directory...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/\" \/>\n<meta property=\"og:site_name\" content=\"Welcome To Golang By Example\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-20T09:13:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-11-20T09:14:03+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/\",\"url\":\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/\",\"name\":\"Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example\",\"isPartOf\":{\"@id\":\"https:\/\/golangbyexamples.com\/#website\"},\"datePublished\":\"2020-11-20T09:13:37+00:00\",\"dateModified\":\"2020-11-20T09:14:03+00:00\",\"author\":{\"@id\":\"https:\/\/golangbyexamples.com\/#\/schema\/person\/8833ea7638dafd763cb1db6c0ca4576f\"},\"breadcrumb\":{\"@id\":\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/golangbyexamples.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Import same package name or Aliasing while importing packages in Go (Golang)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/golangbyexamples.com\/#website\",\"url\":\"https:\/\/golangbyexamples.com\/\",\"name\":\"Welcome To Golang By Example\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/golangbyexamples.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/golangbyexamples.com\/#\/schema\/person\/8833ea7638dafd763cb1db6c0ca4576f\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/golangbyexamples.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"url\":\"https:\/\/golangbyexamples.com\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/","og_locale":"en_US","og_type":"article","og_title":"Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example","og_description":"Table of Contents OverviewExample Overview Aliasing in importing packages means give a different name to the imported package. Syntax for it is Above statement means that whatever package is present at directory...","og_url":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/","og_site_name":"Welcome To Golang By Example","article_published_time":"2020-11-20T09:13:37+00:00","article_modified_time":"2020-11-20T09:14:03+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/","url":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/","name":"Import same package name or Aliasing while importing packages in Go (Golang) - Welcome To Golang By Example","isPartOf":{"@id":"https:\/\/golangbyexamples.com\/#website"},"datePublished":"2020-11-20T09:13:37+00:00","dateModified":"2020-11-20T09:14:03+00:00","author":{"@id":"https:\/\/golangbyexamples.com\/#\/schema\/person\/8833ea7638dafd763cb1db6c0ca4576f"},"breadcrumb":{"@id":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/golangbyexamples.com\/import-same-package-name-golang\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/golangbyexamples.com\/import-same-package-name-golang\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/golangbyexamples.com\/"},{"@type":"ListItem","position":2,"name":"Import same package name or Aliasing while importing packages in Go (Golang)"}]},{"@type":"WebSite","@id":"https:\/\/golangbyexamples.com\/#website","url":"https:\/\/golangbyexamples.com\/","name":"Welcome To Golang By Example","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/golangbyexamples.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/golangbyexamples.com\/#\/schema\/person\/8833ea7638dafd763cb1db6c0ca4576f","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/golangbyexamples.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","caption":"admin"},"url":"https:\/\/golangbyexamples.com\/author\/admin\/"}]}},"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paOs1b-18R","amp_validity":null,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/posts\/4393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/comments?post=4393"}],"version-history":[{"count":2,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/posts\/4393\/revisions"}],"predecessor-version":[{"id":4395,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/posts\/4393\/revisions\/4395"}],"wp:attachment":[{"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/media?parent=4393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/categories?post=4393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/golangbyexamples.com\/wp-json\/wp\/v2\/tags?post=4393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}