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Ruby Keyword

7 posts

not Keyword in Ruby

Last Updated: 27 July 2020

The keyword “not” is different from the others. The "not" keyword gets an expression and inverts its boolean value – so given a true condition it will return false. It wor...read more

Or Keyword in Ruby

Last Updated: 27 July 2020

In Ruby, "or" keyword returns the logical disjunction of its two operands. The condition becomes true if both the operands are true. It returns “true” when any one conditi...read more

And Keyword in Ruby

Last Updated: 13 April 2021

The and keyword in Ruby takes two expressions and returns "true" if both are true, and "false" if one or more of them is false. This keyword is an equivalent of logical o...read more

Defined? Keyword in Ruby

Last Updated: 21 July 2021

Ruby provides a special keyword which is known as define? keyword. This keyword is used to check if the passed expression is defined or not. This keyword will return a str...read more

Undef keyword in Ruby

Last Updated: 23 July 2021

Ruby provides a special keyword which is known as undef keyword. This keyword used to avoid the current working class from responding to calls to the specified named metho...read more

Ruby Hook Methods

Last Updated: 12 July 2025

Ruby Hook Methods are called in reaction to something you do. They are usually used to extend the working of methods at run time. These methods are not defined by default,...read more

Technical Scripter

Include v/s Extend in Ruby

Last Updated: 10 January 2023

Include is used to importing module code. Ruby will throw an error when we try to access the methods of import module with the class directly because it gets imported as a...read more