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This partial typing from the previous video has a name. It is called duck typing. In this video we show both why this is so popular among Python programmers and also why it is so controversial.
Content Categories
Instructional Recordings Creation Date
November 12th, 2020 Creator 1 First Name
Walker Creator 1 Last Name
White Creator 1 Role
Faculty or Staff Member Creator 1 NetID
wmw2 Language
English Searchable
Yes Searchable On
Cornell Web Search
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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…
Content Categories
Instructional Recordings Creation Date
November 12th, 2020 Creator 1 First Name
Walker Creator 1 Last Name
White Creator 1 Role
Faculty or Staff Member Creator 1 NetID
wmw2 Language
English Searchable
Yes Searchable On
Cornell Web Search
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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.…
Content Categories
Instructional Recordings Creation Date
November 7th, 2020 Creator 1 First Name
Walker Creator 1 Last Name
White Creator 1 Role
Faculty or Staff Member Creator 1 NetID
wmw2 Language
English Searchable
Yes Searchable On
Cornell Web Search
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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…
Content Categories
Instructional Recordings Creation Date
November 7th, 2020 Creator 1 First Name
Walker Creator 1 Last Name
White Creator 1 Role
Faculty or Staff Member Creator 1 NetID
wmw2 Language
English Searchable
Yes Searchable On
Cornell Web Search
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