ruby is method defined
Explanation of a Ruby Method
In Ruby, a method is a reusable block of code that performs a specific task. It is defined using the def
keyword, followed by the method name, parentheses for optional parameters, and a block of code enclosed in curly braces or an end
keyword. Here is an example of a Ruby method:
def greet(name)
puts "Hello, #{name}!"
end
In this example, the method is named greet
and takes a parameter name
. The code inside the method is executed when the method is called. In this case, it prints a greeting message with the provided name.
To use the method, you can call it by its name followed by parentheses containing the arguments:
greet("John")
This will output: Hello, John!
Methods in Ruby can also have a return value. By default, a method returns the value of the last evaluated expression. However, you can explicitly specify a return value using the return
keyword.
def add(a, b)
return a + b
end
In this example, the add
method takes two parameters a
and b
and returns their sum.
To call the method and use its return value, you can assign it to a variable:
result = add(3, 4)
puts result
This will output: 7
That's a brief explanation of how methods work in Ruby. Let me know if you have any further questions!