What Is Unless in Ruby

Ruby provides a special statement which is referred as unless statement. This statement is executed when the given condition is false. … In if statement, the block executes once the given condition is true, however in unless statement, the block of code executes once the given condition is false.

Should I use unless Ruby?

A good use for unless is when you want to check something at the beginning of a method. Also known as a guard clause. return unless name.

What is Elsif in Ruby?

Ruby if…else Statement Notice Ruby uses elsif, not else if nor elif. Executes code if the conditional is true. If the conditional is not true, code specified in the else clause is executed. An if expression’s conditional is separated from code by the reserved word then, a newline, or a semicolon.