Search for tag: "setter"

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09:37 Lesson 23.8 Properties (OPTIONAL) Lesson 23.8 Properties (OPTIONAL)	Lesson 23.8 Properties (OPTIONAL) This video introduces an advanced topic that is completely optional and will not appear on any exam. Classes like RGB and Point3 appear to enforce their invariants without any getters and setters.… property attribute numerator method getter setter fraction class properties tutor invariant setters getters denominator decorator module fact specification attributes rgb From Hannah Lee 30 plays
04:00 Lesson23.4 The is Operator Lesson23.4 The is Operator	Lesson23.4 The is Operator As we saw in the previous video, we cannot trust == if we need to test if two variables refer to the same object folder. In this video we show an alternative operator is, which is safe to use because… operator idea object fractions folder p. equals method symbol variable class objects r. numerator setter sense underscore style issue answer From Hannah Lee 50 plays
09:07 Lesson 22.8 Subclass Initializers Lesson 22.8 Subclass Initializers	Lesson 22.8 Subclass Initializers In this video we show that thte primary purpose of the super function is in the initializer method of the subclass. That is because we cannot guarantee that all of the attributes for the parent class… initializer bonus executive attribute salary employee attributes setters class module method getter helper problem tutor things thing methods getters setter From Hannah Lee 65 plays
04:57 Lesson 21.6 Immutable Attributes Lesson 21.6 Immutable Attributes	Lesson 21.6 Immutable Attributes Getters and setters have another advantage in that they allow us to completely disable to any changes to an attribute. This allows us to separate attributes into mutable and immutable attributes,… attribute person turtle setter attributes setters getters initializer class things definition preconditions getter alright underscore distinction error fact statement assignment From Hannah Lee 84 plays
09:05 Lesson 21.5 Data Encapsulation Lesson 21.5 Data Encapsulation	Lesson 21.5 Data Encapsulation In this previous video we introduced the concept of getters and setters. But how do we force the user to use these when the attribute is so much simpler. In this video we talk about the concept of… class attribute attributes method object methods hour interface underscore things specification setters getters hashtag definer thing setter folder tutor string From Hannah Lee 93 plays
07:37 Lesson 21.4 Invariant Enforcement Lesson 21.4 Invariant Enforcement	Lesson 21.4 Invariant Enforcement We know how to enforce preconditions, but how do we force invariants for our attributes? As we see in this video, we do it much the same as for preconditions. But that is because we are going to… preconditions methods class attributes precondition statements invariance method hour purpose object getter programmer minute initializer attribute setter problem invariants values From Hannah Lee 96 plays