How to make a directory in Ruby?

How to make a directory in Ruby? Using Ruby’s Mkdir Method To Create A New Directory If you want to create a new folder with Ruby you can use the Dir. mkdir method. If given

How to make a directory in Ruby?

Using Ruby’s Mkdir Method To Create A New Directory If you want to create a new folder with Ruby you can use the Dir. mkdir method. If given a relative path, this directory is created under the current path ( Dir. pwd ).

How do I get the current directory in Ruby?

File. basename() returns the base name even when its argument is the path of a directory. To get absolute path, Dir. pwd seems to do the trick.

How do I change directory in Ruby?

chdir : To change the current working directory, chdir method is used. In this method, you can simply pass the path to the directory where you want to move. The string parameter used in the chdir method is the absolute or relative path.

What is file join in Ruby?

ruby. From reading the documentation, it’s apparent that File. join joins the given parameters with the / character. When is using this, as opposed to filenames.

How do I read a JSON file in Ruby?

If you don’t have already installed JSON gem on your computer you can install it running the following command.

  1. gem install json.
  2. require ‘json’ => true.
  3. file = File.read(‘./file-name-to-be-read.json’)
  4. data_hash = JSON.parse(file)

How do you get a substring in Ruby?

There is no substring method in Ruby. Instead we rely upon ranges and expressions. Substring ranges. With a range, we use periods in between 2 numbers—the first and last index of the substring.

What is the difference between puts and print in Ruby?

Hi, The difference between print and puts is that puts automatically moves the output cursor to the next line (that is, it adds a newline character to start a new line unless the string already ends with a newline), whereas print continues printing text onto the same line as the previous time.

How do I read a file in Ruby?

You can read a file in Ruby like this:

  1. Open the file, with the open method.
  2. Read the file, the whole file, line by line, or a specific amount of bytes.
  3. Close the file, with the close method.

How do you catch exceptions in Ruby?

Ruby also provides a separate class for an exception that is known as an Exception class which contains different types of methods. The code in which an exception is raised, is enclosed between the begin/end block, so you can use a rescue clause to handle this type of exception.

How do you replace letters in Ruby?

Ruby allows part of a string to be modified through the use of the []= method. To use this method, simply pass through the string of characters to be replaced to the method and assign the new string.

Is string in Ruby?

Strings are objects: As you know that Ruby is an object-oriented language so string in Ruby are objects.