PPT-Subtyping

Chapter 15 Benjamin Pierce Types and Programming Languages Varieties of Polymorphism Parametric polymorphism A single piece of code is typed generically Imperative or firstclass polymorphism. Hall Katherine W Phillips Sarah SM Townsend Organization and Management Department Goizueta Business School Emory University USA Management Division Columbia Business School Columbia University USA Management and Organization Department Marshall S Class 11: . Subtyping. and Inheritance. Fall 2010. University of Virginia. David Evans. Schedule Updates. PS4. is now due on . Monday, October 11. (October 12: Reading day). . Start thinking about project ideas. Subsumption. Some . types . are better . than others, in the . sense that a value . of one can . always safely be used. where a value of . the other . is expected.. Which can be formalized as by introducing: . Ben Greenman, . Fabian Muehlboeck. , and Ross Tate. Cornell University. Typesafe. Equality + Generic Lists?. (. Typesafe. ) Equality. @override. public . boolean. equals(Object other) {. . if(other . ANALYSIS OF PROG. LANGS. Type . Systems. Instructors: Crista Lopes. Copyright © Instructors.. Polymorphism. Constructs . that can take different . forms.  . poly = many. morph = shape. Types of Polymorphism. Subtypes CSE 331 Autumn 2010 • Sometimes every B is an A – In a library database: • every book is a library holding • every CD is a library holding • Subtyping expre Renementsr::=:::varies:::BasicTypesb::=fv:Intjrgj:::Types::=bjx:!Environment::=;jx:;Subtyping`12Abbreviationsx:frg:=x:fx:Intjrgfxjrg:=fx:Intjrgfrg:=fv:Intjrgfx:fy:Intjrygjrxg:=fx:Intjrx^ry[ / Winter 2016. CSE 331. Software Design and Implementation. Lecture 14. Generics 2. Hi, I’m James!. Big picture. Last time: Generics intro. Subtyping. and Generics. Using . bounds. for more flexible subtyping. Practices. Zhenjiang Hu, . Haiyan. Zhao, Yingfei Xiong. Peking University, Spring Term, 2016. Chap 17. Please refer to the package of “. joinexrercise. ”. Subtype Relation. Records. “Algorithmic” subtype relation. Ben Greenman, . Fabian Muehlboeck. , and Ross Tate. Cornell University. Typesafe. Equality Generic Lists?. (. Typesafe. ) Equality. @override. public . boolean. equals(Object other) {. . if(other . CSCE 314: Programming Languages . Prof. Lupoli, (much from Dr. . Dylan . Shell). Abstract Data Types (ADTs). Object-oriented programming has its roots in ADTs. ADTs. Encapsulate state along with a set of operations . Lecture 24. Subtyping . Dan Grossman. Autumn . 2018. Last major topic: Subtyping. Build up key ideas from first principles. In . pseudocode. because:. No time for another language. Simpler . to first show subtyping without objects. Ravi Chugh. Motivation: Dynamic Languages. Dynamically-typed languages. Enable rapid prototyping. Facilitate inter-language development. Statically-typed languages. Prevent certain run-time errors. Enable optimized execution. OPTN/UNOS Operations and Safety Committee . 2. What . p. roblem will the proposal solve? . Update guidance to keep it . relevant and timely. Address need and questions raised within transplant community .