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3 min readIn Elixir, &+/2 is a special syntax that represents a function in the form of an anonymous function. In this case, the function name is "&+", which takes two arguments. This syntax is commonly used in Elixir when working with functions that require multiple arguments, and allows for increased flexibility in defining and using functions throughout the codebase.
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5 min readTo install and run Elasticsearch in Vagrant, you first need to have Vagrant and VirtualBox installed on your system.Create a new directory for your Vagrant project and navigate to it in your terminal.Create a Vagrantfile in this directory by running the command "vagrant init".Edit the Vagrantfile to include the necessary configurations for your Elasticsearch setup.
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4 min readTo open a file and edit its content in a Groovy script, you can use the Java File and FileWriter classes. First, create a new File object by specifying the file path. Then, use a FileWriter object to write or append to the file. You can specify whether you want to overwrite the existing content or append to it. After making changes to the file, be sure to close the FileWriter object to save the changes. Remember to handle exceptions such as file not found or IO errors.
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6 min readTo stream into a file in Elixir, you can use the IO.binwrite/2 function from the File module. This function can be used to stream data into a file by continuously writing chunks of data. Here is an example code snippet that demonstrates how to stream data into a file in Elixir: {:ok, file} = File.open("output.txt", [:write]) Enum.each(1..100, fn num -> IO.binwrite(file, to_string(num) <> "\n") end) File.
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4 min readTo use YAML files with Vagrant, you can define your virtual machine configurations in a separate YAML file instead of writing them directly in the Vagrantfile. This can make your Vagrantfile cleaner and more organized.To use a YAML file with Vagrant, you need to create a new YAML file (e.g., config.yml) and define your virtual machine configurations in this file using appropriate YAML syntax. You can include configurations such as box, hostname, network settings, provisioners, etc.
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4 min readThe "sh" function in Groovy is used to execute shell commands directly from the Groovy script. It allows for interacting with the command line, running external programs, and performing system operations. The "sh" function takes a String parameter containing the command to be executed and returns the output of the command as a String. This function is often used when a Groovy script needs to run system commands or perform actions that require using the shell.
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7 min readTo create an .exe file from an Elixir project, you can use tools like Exrm or Distillery. These tools allow you to generate a release package that includes all necessary dependencies and configurations in a standalone executable file.First, you need to add the chosen tool (Exrm or Distillery) to your project's dependencies in the mix.exs file. Then, you will need to configure the tool to build the release for the desired platform (e.g. Windows).
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6 min readTo use Ansible with Vagrant locally, you first need to ensure that both Ansible and Vagrant are installed on your machine. You can then create a Vagrantfile to define the virtual machine configuration and provisioning. Within the Vagrantfile, you can specify the Ansible provisioner, which allows you to run Ansible playbooks to configure the virtual machine.You will also need to create an Ansible playbook to define the tasks that you want to run on the virtual machine.
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6 min readTo make a patch HTTP request in Groovy, you can use the third-party library HTTPBuilder. This library allows you to easily send HTTP requests and handle responses in a Groovy script. First, you will need to include the HTTPBuilder library in your Groovy script by adding the following import statement at the beginning of your script: import groovyx.net.http.HTTPBuilder Next, you can create an instance of the HTTPBuilder class and use it to send a patch request.
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7 min readTo run the sleep command in a Vagrantfile, you can simply add the command within the provision block of the Vagrant configuration. The sleep command can be used to pause the execution of scripts or commands for a specified amount of time. For example, to make the Vagrant machine sleep for 60 seconds, you can add the following line within the provision block:config.vm.
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6 min readIn Elixir, you can truncate a string using the String.slice/2 function. This function takes two arguments: the string to be truncated and the maximum length of the truncated string. Here's an example of how to use it: string = "This is a long string that needs to be truncated" truncated_string = String.slice(string, 0..10) IO.puts truncated_string In this example, the String.slice/2 function is used to truncate the original string to 10 characters.