This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

~ 

        # Integer.~

(from ruby core)
---
    ~int  ->  integer

---

One's complement: returns a number where each bit is flipped.

Inverts the bits in an Integer. As integers are conceptually of infinite
length, the result acts as if it had an infinite number of one bits to
the left. In hex representations, this is displayed as two periods to
the left of the digits.

    sprintf("%X", ~0x1122334455)    #=> "..FEEDDCCBBAA"

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.