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CQRS, Task Based UIs, Event Sourcing agh! | Greg Young
CQRS is simply the creation of two objects where there was previously only one. The separation occurs based upon whether the methods are a command or a query
The online whiteboard of Kristofer Palmvik
The only time you should swallow exceptions (catch{..} or catch(Exception){...}) is in your global exception handler to avoid truly fundamental issues (and recursive global exception handling).
A contract is an assertion in the code. If a contract is violated (hence if the condition asserted is false) we consider that there must be a bug.