7.1.2.1 Exercise guarantees | COMP.CS.140 Ohjelmointi 3: Rajapinnat ja tekniikat

Question 1 5 points

Preparing for error situations in programming

is easy and makes the program structure clearer

may require all kinds of clean up work that is easily left undone

includes an assumption that others can act incorrectly

is difficult and makes the structure of the code more messy

means that the program always recovers from error situations

Question 2 5 points

In exception safety

the documentation of the interface depicts error situations and exceptions that the user sees

error situations do not occur

the importance of errors and exceptions for the caller increases as encapsulation hides the implementation

encapsulation hides the errors and exceptions created in the interface implementation from the caller

subclasses are not allowed to break the promises of the baseclass

Question 3 5 points

In exception guarantees

the class invariant of the object still holds in the basic guarantee

in the strong guarantee the state of the object remains as it was before the method was called

depict what the user can expect from the state and functioning of the object in situations where a method of the object throws an exception for the caller to handle

the aim is always strong guarantee

nothrow means no exceptions occur in the implementation of the method

Exercise guarantees

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