[ |:a :b |

 inform: (a bitAnd: b) printString.
 inform: (a bitOr: b) printString.
 inform: (a bitXor: b) printString.
 inform: (a bitNot) printString.
 inform: (a << b) printString.
 inform: (a >> b) printString.

] applyTo: {8. 12}.