Search for tag: "subclass"

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Lesson 27.10 Model Classes duration 8 minutes 27 seconds Lesson 27.10 Model Classes Lesson 27.10 Model Classes	Lesson 27.10 Model Classes Through the semester, you have essentially been writing application controllers. In the final assignment, you will need to do that again. But you will also be creating your own models this time. In… controller model sparks rockets class attribute rocket things classes attributes loop bunch models lot velocity screen assignment spark methods subclass From Hannah Lee 56 plays
Lesson 27.8 Application Design duration 8 minutes 9 seconds Lesson 27.8 Application Design Lesson 27.8 Application Design	Lesson 27.8 Application Design Game applications (and graphical applications in general) can get pretty complicated. In this video we talk about how to break up your code to make it more readable and more manageable. In some… class app animation attributes classes subclass helper ellipse game method text object things screen thing functions parameter update label angle From Hannah Lee 60 plays
Lesson 27.3 The GameApp Class duration 11 minutes 4 seconds Lesson 27.3 The GameApp Class Lesson 27.3 The GameApp Class	Lesson 27.3 The GameApp Class In this video we introduce the GameApp class, which is a class written by your instructor. In the last assignment you will be creating a subclass of the class to run your game. This video highlights… game thing class method ellipse angle window things update methods screen attributes object position documentation animation app lips initializer subclass From Hannah Lee 87 plays
Zoom Nov. 12. Dynamic Typing duration 52 minutes 48 seconds Zoom Nov. 12. Dynamic Typing Zoom Nov. 12. Dynamic Typing	Zoom Nov. 12. Dynamic Typing Our last presentation on classes reviews the issue of typing, and why this has become much trickier with the introduction of subclasses. This is the last material covered in the second exam.The… angle class error exam thing instance method assignment things minutes degrees lot constructor object lab question exception subclass seconds videos From Hannah Lee 31 plays
Lesson 25.5 Custom Error Types duration 4 minutes 22 seconds Lesson 25.5 Custom Error Types Lesson 25.5 Custom Error Types	Lesson 25.5 Custom Error Types Now that we can raise an error of any type, it is time to make our own error types. In this video we show that this is incredibly simple, and needs almost no code. error exception custom class types initializer errors object argument base folder attributes methods pass header thing recovers arithmetic parent subclass From Hannah Lee 65 plays
Lesson 25.3 Error Types and the Call Stack duration 7 minutes 1 second Lesson 25.3 Error Types and the Call Stack Lesson 25.3 Error Types and the Call Stack	Lesson 25.3 Error Types and the Call Stack After the last video, try-except looks less like an if-else statement and more like an if-elif-else statement. As we see in this video, this has profound effects on how errors interact with the call… error call function errors frame assertion functions statements subclass stack feedback recovery arithmetic division arguments beginning points valueerror zerodivisionerror bottom From Hannah Lee 69 plays
Lesson 25.1 Error Types duration 5 minutes 24 seconds Lesson 25.1 Error Types Lesson 25.1 Error Types	Lesson 25.1 Error Types In this video we revisit error messages in Python and show how to read the error type. This type is a class, which means that you can construct your own error objects. error class exception assertion python stack things folders base object trace zerodivisionerror colon parent subclass instance fact errors arithmetic exceptions From Hannah Lee 75 plays
Lesson 24.2 The isinstance Function duration 7 minutes 20 seconds Lesson 24.2 The isinstance Function Lesson 24.2 The isinstance Function	Lesson 24.2 The isinstance Function In this video, we show that we can solve the problem of strict typing by using the isinstance function. This function will be our preferred way for enforcing preconditions going forward. instance employee fraction function subclass executive class object fractions int types preconditions definition string module expression classes python power statement From Hannah Lee 73 plays
Lesson 24.1 Strict Typing duration 5 minutes 52 seconds Lesson 24.1 Strict Typing Lesson 24.1 Strict Typing	Lesson 24.1 Strict Typing Whenever we have enforced preconditions, we have always used the type function. In this video we show why that is a problem, particularly when we want to use an object argument that is a subclass of… fraction operations int typing denominator thing multiplication problem class preconditions series subclasses error fractions subclass definition lot assertion power sense From Hannah Lee 65 plays
Zoom Nov. 5. Inheritance duration 48 minutes 35 seconds Zoom Nov. 5. Inheritance Zoom Nov. 5. Inheritance	Zoom Nov. 5. Inheritance In this presentation, we continue with several of the classes that we worked on last time. But this time, we create subclasses of them.On the exam, the class question will always be a two-parter. One… class circle things call subclass thing alright radius dot assignment object answer parent attributes lot folder ellipse types question a. From Hannah Lee 21 plays
Lesson 23.7 Class Methods duration 11 minutes 36 seconds Lesson 23.7 Class Methods Lesson 23.7 Class Methods	Lesson 23.7 Class Methods Operator overloading is not the only important abstraction tool. In this video we introduce the concept of class methods, which are necessary to add new constructors to a class. These new… matrix class method constructor math rotation point thing methods matrices object triangle subclass parameter word table initializer python reference things From Hannah Lee 85 plays
Lesson 22.5 Name Resolution duration 4 minutes 43 seconds Lesson 22.5 Name Resolution Lesson 22.5 Name Resolution	Lesson 22.5 Name Resolution We have long said that the dot (.) in Python means “inside of the folder”. But which folder? In this video, we show why subclasses makes this question a little less clear. When Python… folder class object content method textbox dot select p. folders resolution subclass error draw text methods variable rule bottom hierarchy From Hannah Lee 66 plays
Lesson 22.4 The Subclass Hierarchy duration 7 minutes 8 seconds Lesson 22.4 The Subclass Hierarchy Lesson 22.4 The Subclass Hierarchy	Lesson 22.4 The Subclass Hierarchy Since every class other than object must be a subclass of another class, this can lead to some interesting “family trees” of classes. In this video we look at Kivy classes, and see how… button class label subclass widget documentation kivy features object script classes thing application module base screen app fonts things method From Hannah Lee 73 plays
Lesson 22.3 The object Class duration 5 minutes 14 seconds Lesson 22.3 The object Class Lesson 22.3 The object Class	Lesson 22.3 The object Class Every class must be a subclass of something, and that parent class goes inside of the parentheses. That means that the word object we have been using in all of class definitions is actually a class.… class object subclass underscore python attributes definition thing things parent folder tutor instance parentheses setters getters features purpose terminal classes From Hannah Lee 79 plays
Lesson 22.2 Subclass Definitions duration 7 minutes 5 seconds Lesson 22.2 Subclass Definitions Lesson 22.2 Subclass Definitions	Lesson 22.2 Subclass Definitions In this video we show how to define a subclass. It is exactly the same as defining a class, except that now we actually do something with the parentheses in the function header. class content slide textbox folder subclass tutor relationship arrow things head folders parent picture thing variable object text base child From Hannah Lee 67 plays
CS2110-FA17-04 Session 04 duration 43 minutes 42 seconds CS2110-FA17-04 Session 04 CS2110-FA17-04 Session 04	CS2110-FA17-04 Session 04 2017-08-31 00:00:00+00 computing terminology elementary special functions class ring theory access latin alphabet c.m.s. method (computer programming) fall 2017 floor variable instance object-oriented programming constructor assignment metadata videonote field printing method thing subclass private equal house static rooms define manufacturing academic administration mathematical notation reasoning postcondition communication unified modeling language object web colors programming constructs data management logic group theory recitation downstairs extend h.. formal methods caption complete computer libraries p.h.d. color java programming language apartment From mjp337@cornell.edu 258 plays