C311 First Class Objects
... Second class: cannot be assigned to a variable or returned by functions. Example: Classes in Smalltalk. Third class: cannot be passed as function parameters. Example: data types in C++. First Class Objects Expressible as an anonymous literal value Storable in variables Storable in data structures Ha ...
... Second class: cannot be assigned to a variable or returned by functions. Example: Classes in Smalltalk. Third class: cannot be passed as function parameters. Example: data types in C++. First Class Objects Expressible as an anonymous literal value Storable in variables Storable in data structures Ha ...
Testing an Optimising Compiler by Generating Random Lambda
... In this paper, we study the problem of generating random, type-correct programs. We chose a simple, yet rich, statically typed programming language, namely the simplytyped lambda calculus [13]. The lambda calculus (λ-calculus) is very simple — it basically only contains anonymous functions, a featur ...
... In this paper, we study the problem of generating random, type-correct programs. We chose a simple, yet rich, statically typed programming language, namely the simplytyped lambda calculus [13]. The lambda calculus (λ-calculus) is very simple — it basically only contains anonymous functions, a featur ...
implementation of the viterbi algorithm using functional
... EDIF (Electronic Design Interchange Format) code. Unlike traditional hardware description languages such as VHDL, Lava has the ability to describe circuit layout as well as behavior. Lava uses Haskell abstractions to provide abstractions in the circuit description. For example, it is difficult to un ...
... EDIF (Electronic Design Interchange Format) code. Unlike traditional hardware description languages such as VHDL, Lava has the ability to describe circuit layout as well as behavior. Lava uses Haskell abstractions to provide abstractions in the circuit description. For example, it is difficult to un ...
overview on declarative programming
... length, e.g., [ Int ], String, [ [ Bool ] ] to name a few. Type polymorphism allows us to use type variables that represent arbitrary types, which helps to make defined functions more generally applicable. This is especially useful in combination with another feature of functional programming langua ...
... length, e.g., [ Int ], String, [ [ Bool ] ] to name a few. Type polymorphism allows us to use type variables that represent arbitrary types, which helps to make defined functions more generally applicable. This is especially useful in combination with another feature of functional programming langua ...
Type Class
... Why Teach/Learn FP and Haskell? • Introduces new problem solving techniques • Improves ability to build and use higher-level procedural and data abstractions • Helps instill a desire for elegance in design and implementation • Increases comfort and skill in use of recursive programs and data struct ...
... Why Teach/Learn FP and Haskell? • Introduces new problem solving techniques • Improves ability to build and use higher-level procedural and data abstractions • Helps instill a desire for elegance in design and implementation • Increases comfort and skill in use of recursive programs and data struct ...
Lambda Calculus and Functional Programming
... themselves, allowing an operation to be performed over and over. Recursion may require maintaining a stack, but tail recursion can be recognized and optimized by a compiler into the same code used to implement iteration in imperative languages. The Scheme programming language standard requires imple ...
... themselves, allowing an operation to be performed over and over. Recursion may require maintaining a stack, but tail recursion can be recognized and optimized by a compiler into the same code used to implement iteration in imperative languages. The Scheme programming language standard requires imple ...
Lecture 12
... Note: although [x] matches the second equation, we will always apply the first equation. Examples fold (||) [False, True, False] => True fold (++) [“Hello “, “world”, “!”] => “Hello world!” fold (*) [1..5] => 120 n.b infix op. Becomes prefix in ‘(‘ ‘)’ ...
... Note: although [x] matches the second equation, we will always apply the first equation. Examples fold (||) [False, True, False] => True fold (++) [“Hello “, “world”, “!”] => “Hello world!” fold (*) [1..5] => 120 n.b infix op. Becomes prefix in ‘(‘ ‘)’ ...
Introduction, Scheme basics (expressions, values)
... • Defines a composite type out of other types • The type constructor for functions is denoted “->” • Example: [Number X Number –> Number] is the type of all procedures that get as input two numbers, and return a number • If all types are allowed we use a type variable: – [T –> T] is the type of all ...
... • Defines a composite type out of other types • The type constructor for functions is denoted “->” • Example: [Number X Number –> Number] is the type of all procedures that get as input two numbers, and return a number • If all types are allowed we use a type variable: – [T –> T] is the type of all ...
Lecture10 - CIS @ UPenn
... Functional programming • Functions taking other functions as an argument are ...
... Functional programming • Functions taking other functions as an argument are ...
Function
... • A function f from domain A to co-domain B, denoted f : A -> B, is a map that associates with every element a in A, a unique element b in B, denoted f(a). – Cf. Relation, multi-valued function, partial function, … – In mathematics, the term “function” usually refers to a total function; in computer ...
... • A function f from domain A to co-domain B, denoted f : A -> B, is a map that associates with every element a in A, a unique element b in B, denoted f(a). – Cf. Relation, multi-valued function, partial function, … – In mathematics, the term “function” usually refers to a total function; in computer ...
15. Functional Programming Languages.
... for implementing abstract data types - Includes lists and list operations - The val statement binds a name to a value (similar to DEFINE in Scheme) - Function declaration form: fun function_name (formal_parameters) = function_body_expression; e.g., fun cube (x : int) = x * x * x; - Functions that us ...
... for implementing abstract data types - Includes lists and list operations - The val statement binds a name to a value (similar to DEFINE in Scheme) - Function declaration form: fun function_name (formal_parameters) = function_body_expression; e.g., fun cube (x : int) = x * x * x; - Functions that us ...
Chapter 14 Functional Programming Languages
... for implementing abstract data types - Includes lists and list operations - The val statement binds a name to a value (similar to DEFINE in Scheme) - Function declaration form: fun function_name (formal_parameters) = function_body_expression; e.g., ...
... for implementing abstract data types - Includes lists and list operations - The val statement binds a name to a value (similar to DEFINE in Scheme) - Function declaration form: fun function_name (formal_parameters) = function_body_expression; e.g., ...