{"id":185,"date":"2018-11-08T17:57:15","date_gmt":"2018-11-08T17:57:15","guid":{"rendered":"http:\/\/kabiliravi.com\/?page_id=185"},"modified":"2019-07-21T13:48:23","modified_gmt":"2019-07-21T13:48:23","slug":"helloworld-using-glide","status":"publish","type":"page","link":"http:\/\/kabiliravi.com\/index.php\/software\/programming\/my-go-tutorial\/helloworld-using-glide\/","title":{"rendered":"Write Hello World Application using Glide"},"content":{"rendered":"
    \n
  1. Create a folder under $GOPATH\/src\/ like this and go to that directory:\n
    $ cd $GOPATH\/src\/\r\n$ mkdir -p github.com\/gotutorial\/helloworld\/helloworld-glide \r\n$ cd github.com\/gotutorial\/helloworld\/helloworld-glide<\/pre>\n<\/li>\n
  2. Initiate a glide yaml file called glide.yaml<\/strong> inside that directory using an editor.\n
    $ vi glide.yaml<\/pre>\n
    And add following line into it:<\/p>\n
    package: github.com\/gotutorial\/helloworld\/helloworld-glide\r\nimport:\r\n- package: github.com\/dustin\/go-humanize<\/pre>\n
    The first line package: github.com\/gotutorial\/helloworld<\/strong> is defining your project package so that if another project is going to have dependency to your project or library they will use this package path there.<\/p>\n
    The second and third lines is related to your imported dependencies. I am using a library called go-humanize<\/strong> to format numbers is human readable format like 1024 (bytes) can be displayed as 1MB. <\/li>\n
  3. The next step is creating your application starting point file. Usually I name it main.go<\/strong>, but you can name it whatever you like. I am fan of vi CLI editor tool to create and modify files.\n
    $ vi main.go<\/pre>\n
    Add following codes into main.go file:<\/p>\n
    package main\r\n\r\nimport humanize \"github.com\/dustin\/go-humanize\"\r\nimport \"fmt\"\r\n\r\nfunc main() {\r\n  fmt.Println(\"Hello World !!\")\r\n  fmt.Printf(\"Sample File Size in MB: %s.\\n\", humanize.Bytes(48234496)) \/\/ Sample File Size in MB: 46MB\r\n}<\/pre>\n<\/li>\n
  4. Using glide install you can install your project dependencies. Technically, it installs the dependencies into a folder beside glide.yaml file called vendor<\/strong><\/strong> \n
    $ glide install<\/pre>\n
    You should be able to see following lines:<\/p>\n
    [INFO]\tLock file (glide.lock) does not exist. Performing update.\r\n[INFO]\tDownloading dependencies. Please wait...\r\n[INFO]\t--> Fetching updates for github.com\/dustin\/go-humanize\r\n[INFO]\tResolving imports\r\n[INFO]\tDownloading dependencies. Please wait...\r\n[INFO]\tSetting references for remaining imports\r\n[INFO]\tExporting resolved dependencies...\r\n[INFO]\t--> Exporting github.com\/dustin\/go-humanize\r\n[INFO]\tReplacing existing vendor dependencies\r\n[INFO]\tProject relies on 1 dependencies.<\/pre>\n
     <\/li>\n
  5. If you list the files on the root directory of your project, you should be able to find a file called glide.lock <\/strong><\/strong><\/strong>and a folder called vendor <\/strong><\/strong><\/strong>which has your project dependencies files 
    \n<\/strong><\/strong><\/p>\n
    $ ls\r\nglide.lock  glide.yaml  main.go  vendor<\/pre>\n
     Go inside the vendor<\/strong> folder and list the files using ls<\/strong> command to see how glide install<\/strong> downloads and stores the dependencies you are referring in import<\/strong> tag inside glide.yaml<\/strong> file<\/p>\n
    $ cd vendor\r\n$ ls\r\ngithub.com\r\n$ cd github.com\r\n$ ls\r\ndustin\r\n$ cd dustin\r\n$ ls\r\ngo-humanize\r\n$ cd go-humanize\r\n$ ls\r\nLICENSE          bigbytes.go       bytes_test.go  commaf.go       english       humanize.go     ordinals.go       si_test.go\r\nREADME.markdown  bigbytes_test.go  comma.go       commaf_test.go  ftoa.go       number.go       ordinals_test.go  times.go\r\nbig.go           bytes.go          comma_test.go  common_test.go  ftoa_test.go  number_test.go  si.go             times_test.go\r\n\r\n<\/pre>\n
    Go back to your project root<\/p>\n
    $ cd ..\/..\/..\/..\/<\/pre>\n<\/li>\n
  6. Now you can run following command to build your app. You should be able to find an executable file named myapp <\/strong>in your project root directory\n
    $ go build -o myapp\r\n\r\nglide.lock  glide.yaml  main.go  myapp  vendor<\/pre>\n<\/li>\n
  7. Finally, run myapp<\/strong> like this. You should be able to see ‘Hello World !!’ prompt in the first line and ‘Sample File Size in MB: 48 MB.’ in the second line\n
    $ .\/myapp\r\nHello World !!\r\nSample File Size in MB: 48 MB.<\/pre>\n
     <\/p>\n
    You can find the source code in my github here:
    \nhttps:\/\/github.com\/gotutorial\/helloworld.git<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
    Create a folder under $GOPATH\/src\/ like this and go to that directory: $ cd $GOPATH\/src\/ $ mkdir -p github.com\/gotutorial\/helloworld\/helloworld-glide $ cd github.com\/gotutorial\/helloworld\/helloworld-glide Initiate a glide yaml file called glide.yaml inside that directory using an editor. $ vi glide.yaml And add following line into it: package: github.com\/gotutorial\/helloworld\/helloworld-glide import: – package: github.com\/dustin\/go-humanize The first line package: github.com\/gotutorial\/helloworld […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":131,"menu_order":4,"comment_status":"open","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-185","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/pages\/185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/comments?post=185"}],"version-history":[{"count":11,"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/pages\/185\/revisions"}],"predecessor-version":[{"id":221,"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/pages\/185\/revisions\/221"}],"up":[{"embeddable":true,"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/pages\/131"}],"wp:attachment":[{"href":"http:\/\/kabiliravi.com\/index.php\/wp-json\/wp\/v2\/media?parent=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}