Best ruby idiom for "nil or zero"

Best ruby idiom for "nil or zero"

ruby design-patterns idioms null

ruby

Ruby design pattern: How to make an extensible factory class?

ruby design-patterns

ruby

Practical example of architecture using EBC? [closed]

ruby-on-rails ruby design-patterns architecture

ruby

When to use Ruby DelegateClass instead of SimpleDelegator? (DelegateClass method vs. SimpleDelegator class)

ruby design-patterns delegation

ruby

What is the correct way to write a singleton pattern in Ruby?

ruby design-patterns singleton

ruby

What's the difference between design patterns and design principles?

ruby-on-rails ruby design-patterns design-principles

ruby

Should a model method call 'save' itself?

ruby-on-rails ruby design-patterns

ruby

Do the `if name == "main": ` like idioms have a name of design pattern?

python ruby perl design-patterns idioms

ruby

interfacelike design pattern in ruby

ruby design-patterns

ruby

Rails static data set

ruby-on-rails ruby design-patterns activerecord

ruby

Is the Visitor pattern useful for dynamically typed languages?

php python ruby design-patterns visitor-pattern

ruby