Naming of predicate methods

A predicate method is tipically one that should return a boolean value (true or false). These methods are useful in a lot of scenarios, like when you have an class with a boolean attribute.

Naming these kind of methods depends on the language you are using, but here are my top priorities.

def is_alive?
  @alive
end

public Boolean isAlive {
  return alive;
}

Rather than:

zombie.getAlive