Boolean Operators in Ruby.

Example 1

# Variables
a = 10
b = 20
c = 30

# using && operator
if a == 10 && b == 20 && c == 30
puts "Boolean AND Operator"
puts result = a * b * c
end

# using || operator
puts "Boolean OR operator"
if a == 10 || b == 20
puts result = a + b + c
end

# using ! operator
puts "Boolean Not Operator"
puts !(true)

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Output

Boolean AND Operator
6000
Boolean OR operator
60
Boolean Not Operator
false

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Example 2 

puts ("logical operators in Ruby")
ruby = "x"
programming = "y" 
      if ruby == "foo" && programming == "bar"
        puts "&&"
      end
      
      if ruby == "foo" and programming == "bar"
        puts "&& and"
      end
      
      p, q, r, s = 1, 2 ,3 , 4
      if p == 1 && q == 2 && r == 3 && s == 4
        puts sum = p + q + r + s
      end
      
      programming = "ruby"
      
      if ruby == "foo" || programming == "bar"
        puts "||"
      end
      
      if ruby == "foo" or programming == "bar"
        puts "|| or"
      end
      
      ruby = "awesome"
      if ruby == "foo" or programming == "bar"
        puts "|| or"
      else
       puts "nothing!"
      end
      
      if not (ruby == "foo" || programming == "bar")
       puts "sorry!"
      end
      
      if !(ruby == "foo" or programming == "bar")
       puts "nope!"
      end

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Output

logical operators in Ruby
10
nothing!
sorry!
nope!

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We have discussed &&, || , !, Boolean operators in ruby. Now, let's see some FAQS related to them.

Frequently Asked Questions

What does Ruby's |= stand for?

It's short for or-equals-to. It first checks whether the value on the left is defined, after which it uses it. If it isn't, use the right-hand value.

In Ruby, what is a lambda?

A lambda is a Ruby object that is comparable to a proc. A lambda, unlike a proc, requires a fixed number of arguments to be supplied to it, and instead of returning immediately, it returns to its calling procedure.

What does || mean in Ruby?

A conditional assignment operator is denoted by the symbol ||=. It functions similarly to =, with the exception that it does nothing if a variable has already been assigned.

In Ruby, what is yield?

Yield is a Ruby keyword that allows a developer to give an argument to a block. The amount of arguments that can be passed to the block is unlimited.

Conclusion

In this article, we have discussed Boolean Operators in Ruby. We looked in-depth using examples.

We hope this article on Boolean operators in ruby helps you to learn something new. And if you're interested in learning more, see our posts on 8 reasons why Ruby should be your first language!, Ruby, Introduction to Ruby on Rails, Ruby on rails for your next web development project!, Ruby on Rails.

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