G6021 Comparative Programming Part 3 – foundations Part 3 – foundations G6021 Comparative Programming 1/36 The Lambda Calculus The λ-calculus is a computational model based on the mathematical notion of a function. Defined by the mathematician Alonzo Church in the 1930’s, as a precise notation for anonymous functions. He noticed that an expression x + […]
G6021 Comparative Programming Part 6 – Summary Part 6 – Summary G6021 Comparative Programming 1/15 Overview Programming paradigms: Functional Object oriented Logic programming Imperative Emphasis on functional programming in Haskell for the labs, however, the exam will be more balanced. Part 6 – Summary G6021 Comparative Programming 2/15 Main Topics Types: subtypes, polymorphism, overloading Semantics:
程序代写代做代考 Haskell algorithm C Fortran graph Lambda Calculus G6021 Comparative Programming Read More »
#I CMPSC 461: Programming Language Concepts Instructor: Danfeng Zhang W369 Westgate Building TAs and LAs Teaching Assistants: • Zeyu Ding (Head TA, dxd437@psu.edu) • Ashish Kumar (azk640@psu.edu) • Madhav Deshpande (mzd574@psu.edu) • Namitha Nambiar (nmn5265@psu.edu) Learning Assistants: • Liang Leo (hql5432@psu.edu) • Jianyu He (jvh6056@psu.edu) Office hours will be announced before next week Course Mode:
CMPSC 461: Programming Language Concepts Midterm 1 Solution Lambda Calculus Problem 1 [10pt] Consider a λ-term λx. λy. x z λx. x 1. (6pt) Compute the set of free variables in the term. Show the detailed derivation in your answer. only z is free 2. (4pt) Based on the results above, connect all bound variables
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INTRODUCTION TO OCAML slides copyright 2017, 2018, 2019, 2020 Author David Walker, updated by Amy Felty permission granted to reuse these slides for non-commercial educational purposes Alonzo Church, 1903-1995 Princeton Professor, 1929-1967 In 1936, Alonzo Church invented the lambda calculus. He called it a logic, but it was a language of pure functions — the
For a short humorous talk on languages without strong typing: https://www.destroyallsoftware.com/talks/wat [Broader point: No one (few people) knows what their programs do in untyped languages.] 1 Type Checking Basics CSI 3120 Amy Felty University of Ottawa slides copyright 2017, 2018, 2019, 2020 Author David Walker, updated by Amy Felty permission granted to reuse these slides
OCaml Datatypes CSI 3120 Amy Felty University of Ottawa slides copyright 2017, 2018, 2019, 2020 Author David Walker, updated by Amy Felty permission granted to reuse these slides for non-commercial educational purposes 2 OCaml So Far • We have seen a number of basic types: – int – float – char – string – bool
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1 Safety and Liveness; Exceptions Christine Rizkallah CSE, UNSW Term 3; 2020 Program Properties 2 Consider a sequence of states, representing the evaluation of a program in a small step semantics (a trace): σ1 →σ2 →σ3 →···→σn Observe that some traces are finite, whereas others are infinite. To simplify things, we’ll make all traces infinite
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COMP3161/COMP9164 Properties and Datatypes Exercises Liam O’Connor November 1, 2019 1. Safety and Liveness Properties (a) [⋆] For each of the following properties, identify if it is a safety or a liveness property. i. When I come home, there must be beer in the fridge. ii. When I come home, I’ll drop onto the couch
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Safety and Liveness Type Safety Exceptions Safety and Liveness; Exceptions Christine Rizkallah CSE, UNSW Term 3; 2020 1 Safety and Liveness Type Safety Exceptions Program Properties Consider a sequence of states, representing the evaluation of a program in a small step semantics (a trace): σ1 →σ2 →σ3 →···→σn Observe that some traces are finite, whereas