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empty? 

        # String.empty?

(from ruby core)
---
    empty? -> true or false

---

Returns `true` if the length of `self` is zero, `false` otherwise:

    "hello".empty? # => false
    " ".empty? # => false
    "".empty? # => true

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.