How to Pass Data From Terminal In Elixir?

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To pass data from the terminal in Elixir, you can specify command line arguments when running your Elixir application. These command line arguments can be accessed using the System.argv function, which returns a list of strings representing the arguments passed to the application.

For example, if you run the following command in the terminal:

elixir my_app.exs arg1 arg2

You can access the command line arguments arg1 and arg2 in your Elixir application using System.argv. The arguments will be passed as strings in a list, with arg1 at index 1 and arg2 at index 2.

You can also use the OptionParser module in Elixir to parse command line options and arguments more easily. This module allows you to define and parse command line options and arguments in a structured way, making it easier to handle various input scenarios.

Overall, passing data from the terminal in Elixir involves reading command line arguments using System.argv and possibly using the OptionParser module for more advanced argument parsing.

How to pass data from terminal in elixir using command line arguments?

In Elixir, you can pass data from the terminal using command line arguments by accessing the System.argv/1 function, which returns a list of command line arguments passed to the Elixir script.

Here's an example of how you can pass and access command line arguments in an Elixir script:

# my_script.exs

args = System.argv()

IO.puts "Command line arguments: #{inspect(args)}"

You can run the script with command line arguments like this:

elixir my_script.exs arg1 arg2 arg3

Output:

Command line arguments: ["my_script.exs", "arg1", "arg2", "arg3"]

You can then access the command line arguments passed to the script from the args variable and process them as needed in your Elixir script.

What is the syntax for passing data from terminal in elixir?

In Elixir, you can pass data from the terminal using command line arguments. To do so, you need to access the arguments passed to the script using System.argv/1 function.

Here is an example of how you can pass data from the terminal in Elixir:

defmodule MyModule do def main(args) do IO.inspect(args) # Print the arguments passed to the script end end

MyModule.main(System.argv())

You can run this script from the terminal and pass data as command line arguments like this:

elixir script.ex arg1 arg2 arg3

In the above example, arg1, arg2, and arg3 are the data passed as command line arguments to the Elixir script. The script will print these arguments using IO.inspect.

How to handle edge cases when passing data from terminal in elixir?

When passing data from the terminal in Elixir, it is important to consider how to handle edge cases, such as input validation and error handling. Here are some tips on handling edge cases when passing data from the terminal in Elixir:

1. Input validation: To handle edge cases, you can use pattern matching and guards to validate the input data before processing it. For example, you can check if the input data is of the correct type, within a specific range, or contains valid characters.
2. Error handling: In case of invalid input or unexpected errors, you can use Elixir's built-in error handling mechanisms, such as raising exceptions or using the {:error, message} tuple to return error messages. This allows you to gracefully handle errors and provide useful feedback to the user.
3. Testing: Always write unit tests to cover different edge cases and scenarios when passing data from the terminal. This helps ensure that your code behaves as expected and handles edge cases properly.
4. Documentation: Provide clear documentation on how to use the program and what input formats are accepted. This can help users understand how to provide valid input and avoid common mistakes.

By following these tips, you can effectively handle edge cases when passing data from the terminal in Elixir and ensure that your program behaves correctly in various scenarios.