Ruby On Rails Interview Questions and Answers
Question: What is the difference between ‘&&’, ‘AND’ and ‘&’ operators?Answer:The ‘&&’ and ‘and’ are both logical and statements. They ‘&&’ operator has higher precedence though. Here’s an example of illustrate this in more detail: foo = 3 bar = nil a = foo and bar # => nil a # => 3 a = foo && bar # => nil a # => nil Notice how the statement ‘a = foo and bar’ actually behaves like ‘(a = foo) and bar’ |
Save For Revision
Bookmark this item, mark it difficult, or place it in a revision set.
Log in to save bookmarks, difficult questions, and revision sets.
Is it helpful? Yes No
Most helpful rated by users:
- What is Ruby On Rails?
- Why Ruby on Rails?
- Explain how (almost) everything is an object in Ruby.
- What are Gems and which are some of your favorites?
- How would you declare and use a constructor in Ruby?