Haskell Language Common GHC Language Extensions BinaryLiterals
Example
Standard Haskell allows you to write integer literals in decimal (without any prefix), hexadecimal (preceded by 0x or 0X), and octal (preceded by 0o or 0O). The BinaryLiterals extension adds the option of binary (preceded by 0b or 0B).
0b1111 == 15 -- evaluates to: True
