Explain the difference between nil and false in ruby?
Answer / Nitin Kumar Verma
In Ruby, 'nil' is an object that represents the absence of any value or object, while 'false' is a boolean value representing falsehood. While 'nil' evaluates to false in boolean contexts, it takes up memory space. On the other hand, 'false' does not consume memory and is preferred for boolean values.
| Is This Answer Correct ? | 0 Yes | 0 No |
Is ruby supports single inheritance/ multiple inheritance or both?
What is the pattern matching operator in ruby?
Explain when self.up and self.down method is used?
How symbol is different from variables?
In Ruby code, often it is observed that coder uses a short hand form of using an expression like array.map(&:method_name) instead of array.map { |element| element.method_name }. How this trick actually works?
What are some advantages of using ruby?
what is a class library in Ruby?
what is the difference between String and Symbol?
What are ruby blocks.
Define ruby methods.
Tell me what is the command to create a migration?
What are the operators available in ruby?