PPT-the IO Monad

Comp150PLD Reading Tackling the Awkward Squad Sections 12 Real World Haskell Chapter 7 IO Thanks to Simon Peyton Jones for many of these slides Beauty Functional programming is beautiful. Rangespeci64257er for lists Listdi64256erence operator List comprehension generator Single assignment operator in doconstr De64257nition separator Function typemapping operator Lambda de64257nition operator Separator in case construction Type or Ho ev er if one go es further and uses con ersion to pro equiv alence of programs then gross simpli57356cation is in tro duced programs are iden ti57356ed with total functions from values to values that ma jeopardise the applicabilit of theoretical Computations . into Components. via Arrows as Profunctors. Kazuyuki . Asada Ichiro Hasuo. RIMS,. . Kyoto University. PRESTO . Research Promotion Program, Japan Science and Technology . Agency. The Fold. . Chapter 7. By Catherine Cheng. 鄭如玉. Two arguments. 1. I . must have a body because an obscure object lives . in . . me. . . 2. We must have a body because . our mind possesses a . at Scale, at Facebook. Simon Marlow. May 2015. Headlines. Right now there are thousands of multicore machines running Haskell 24/7 at Facebook. Haskell is a key part of the anti-abuse infrastructure. i. -Languages. Paul M. Pietroski, University of Maryland. Dept. of Linguistics, Dept. of Philosophy. Human Languages . . acquirable by normal human children . given ordinary courses of experience. A monad orders . actions. An action is any computation that has a natural notion of order. I.e. one thing happens before another.. IO is the action of altering the real world.. There are many other styles of computation that have a natural notion of order. at Scale, at Facebook. Simon Marlow. May 2015. Headlines. Right now there are thousands of multicore machines running Haskell 24/7 at Facebook. Haskell is a key part of the anti-abuse infrastructure. Douglas . Crockford. Today. Monads. Managing . Asynchronicity. Syntaxation. Principles of Security. Go To There and Back Again. Quality. Functional Programming. Programming with functions.. FORTRAN II (1958). Supplemental material – . not on exam. Lambda Calculus. From . wikipedia. Lambda calculus (also written as λ-calculus) . is a formal system in mathematical logic and computer science for expressing computation based on function abstraction and application using variable binding and substitution. Crockford. Today. Monads. Managing . Asynchronicity. Syntaxation. Principles of Security. Go To There and Back Again. Quality. Functional Programming. Programming with functions.. FORTRAN II (1958). FUNCTION . cs242. Reading: “. Tackling the Awkward Squad. ,. ” Sections 1-2. “. Real World Haskell. ,” Chapter 7: I/O. Thanks to Simon Peyton Jones for. many of . these slides. . Announcements. Midterm. Concurrency. First class functions. Generic programming. Memory Management (move semantics). Math nomenclature. Functor. Applicative Functor. Monad. Monoid. Functional Patterns in C . Sorting: compare function. Announcements. HW3 due today. HW5 is out and due on Tuesday after the break. Spring 20 CSCI 4450/6450, A . Milanova. 2. Outline. P. ure lambda calculus. . (catch up). Syntax and semantics. Free and bound variables.