Search for tag: "fractions"

7 Media

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
Lesson 23.5 Mixed-Type Operators duration 8 minutes 19 seconds Lesson 23.5 Mixed-Type Operators Lesson 23.5 Mixed-Type Operators	Lesson 23.5 Mixed-Type Operators Operator overloading allows us to redefine the meaning of + or * on objects of our class. But sometimes we want to mix together types like a fraction and integer. In this video we show that it is… fraction fractions times multiplication method underscore int thing helper methods star left operation precondition integer definition expression p. multiply sense From Hannah Lee 76 plays
Lesson23.4 The is Operator duration 4 minutes 0 seconds 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 56 plays
Lesson 23.3 Object Equality duration 8 minutes 51 seconds Lesson 23.3 Object Equality Lesson 23.3 Object Equality	Lesson 23.3 Object Equality Previously when we compared objects, we compared them attribute-by-attribute. That is because the meaning of == on objects is less clear. As we show in this video, that is because equality (and the… underscore fraction class fractions object methods multiplication thing equals folders sense operators objects equality comparison answer cross eq method numerator From Hannah Lee 88 plays
Lesson 23.1 The Principle of Abstraction duration 9 minutes 44 seconds Lesson 23.1 The Principle of Abstraction Lesson 23.1 The Principle of Abstraction	Lesson 23.1 The Principle of Abstraction In this video we introduce the principle of abstraction, which is simply hiding unnecessary details about a class from the user of a class. However, there are many different ways to do that, which is… fraction class python things abstraction operations attributes operator denominator object methods numerator lot times method fractions setters getters encapsulation floats From Hannah Lee 87 plays
Biophysics Colloquium with Max Kushner and Erik… duration 28 minutes 10 seconds Biophysics Colloquium with Max Kushner and Erik… Biophysics Colloquium with Max Kushner and Erik Henze	Biophysics Colloquium with Max Kushner and Erik Henze Zoom Recording ID: 95323483928 UUID: dunu4II1Ql+mjqEyFX2F2g== Meeting Time: 2020-10-07T19:34:10Z channel activity connection fraction cell molecules channels brain liver response experiment fractions effect detergent kind fractionation choline patch membrane tail From Jonathan Fuller 1 plays