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Séance de cours

Types et relations inductives

Dans cours

CS-320: Computer language processing

We teach the fundamental aspects of analyzing and interpreting computer languages, including the techniques to build compilers. You will build a working compiler from an elegant functional language into machine code using a popular backend called LLVM (htt ...

Description

Cette séance de cours couvre l'importance des types dans la prévention des erreurs, la sécurité de la mémoire et la documentation des programmes. Il traite également des systèmes de type malsain, des défaillances intentionnelles et involontaires, et des exemples de Java et de Scala. L'instructeur explique le but de la séance de cours, qui est de définir une relation inductive définie pour le système de type d'une petite langue.

Enseignant·e

Viktor Kuncak

Viktor Kunčak joined EPFL in 2007, after receiving a PhD degree from MIT. Since then has been leading the Laboratory for Automated Reasoning and Analysis and supervised at least 12 completed PhD theses. His works on languages, algorithms and systems for verification and automated reasoning. He served as an initiator and one of the coordinators of a European network (COST action) in the area of automated reasoning, verification, and synthesis. In 2012 he received a 5-year single-investigator European Research Council (ERC) grant of 1.5M EUR. His invited talks include those at Lambda Days, Scala Days, NFM, LOPSTR, SYNT, ICALP, CSL, RV, VMCAI, and SMT. A paper on test generation he co-authored received an ACM SIGSOFT distinguished paper award at ICSE. A PLDI paper he co-authored was published in the Communications of the ACM as a Research Highlight article. His Google Scholar profile reports an over-approximate H-index of 38. He was an associate editor of ACM Transactions on Programming Languages and Systems (TOPLAS) and served as a co-chair of conferences on Computer-Aided Verification (CAV), Formal Methods in Computer Aided Design (FMCAD), Workshop on Synthesis (SYNT), and Verification, Model Checking, and Abstract Interpretation (VMCAI). At EPFL he teaches courses on functional and parallel programming, compilers, and verification. He has co-taught the MOOC "Parallel Programming" that was visited by over 100'000 learners and completed by thousands of students from all over the world.

Source officielle

Proximité ontologique

Informatique théorique

Théorie des langages de programmation: Langage de programmation de haut niveau

Concepts associés (32)

Théorie des types

En mathématiques, logique et informatique, une théorie des types est une classe de systèmes formels, dont certains peuvent servir d'alternatives à la théorie des ensembles comme fondation des mathématiques. Ils ont été historiquement introduits pour résoudre le paradoxe d'un axiome de compréhension non restreint. En théorie des types, il existe des types de base et des constructeurs (comme celui des fonctions ou encore celui du produit cartésien) qui permettent de créer de nouveaux types à partir de types préexistant.

Type system

In computer programming, a type system is a logical system comprising a set of rules that assigns a property called a type (for example, integer, floating point, string) to every "term" (a word, phrase, or other set of symbols). Usually the terms are various constructs of a computer program, such as variables, expressions, functions, or modules. A type system dictates the operations that can be performed on a term. For variables, the type system determines the allowed values of that term.

Parametric polymorphism

In programming languages and type theory, parametric polymorphism allows a single piece of code to be given a "generic" type, using variables in place of actual types, and then instantiated with particular types as needed. Parametrically polymorphic functions and data types are sometimes called generic functions and generic datatypes, respectively, and they form the basis of generic programming. Parametric polymorphism may be contrasted with ad hoc polymorphism.

Ad hoc polymorphism

In programming languages, ad hoc polymorphism is a kind of polymorphism in which polymorphic functions can be applied to arguments of different types, because a polymorphic function can denote a number of distinct and potentially heterogeneous implementations depending on the type of argument(s) to which it is applied. When applied to object-oriented or procedural concepts, it is also known as function overloading or operator overloading.

Typing rule

In type theory, a typing rule is an inference rule that describes how a type system assigns a type to a syntactic construction. These rules may be applied by the type system to determine if a program is well-typed and what type expressions have. A prototypical example of the use of typing rules is in defining type inference in the simply typed lambda calculus, which is the internal language of Cartesian closed categories. Typing rules specify the structure of a typing relation that relates syntactic terms to their types.

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Séances de cours associées (40)

Introduction aux types et aux relations inductives

Explore l'importance des types dans la programmation et discute des systèmes de types malsains et des relations inductives.

Sous-typage et polymorphisme

Explore les règles de sous-typage, les défis et son lien avec diverses formes de polymorphisme dans les langages de programmation.

Fondements de Scala: Modélisation et Systèmes de Type

Couvre les fondements de Scala, y compris la modélisation des types récursifs, des types paramétrés et de la variance.

Traitement de l'image aux Fidji

Couvre les bases du traitement d'image à l'aide du logiciel fidjien, en se concentrant sur la gestion des fichiers et l'application de filtres.

Polymorphisme et preuves

Couvre le polymorphisme paramétrique, énumère la construction, les tuples, les méthodes génériques, le tri de fusion et les propriétés du programme.

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Concepts associés (32)

Théorie des types

Type system

Parametric polymorphism

Ad hoc polymorphism

Typing rule

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