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Functional_Programming
Functional_Programming

The Clean programming language
The Clean programming language

... easily. The portability of Clean program makes it possible to use the same source  code without any modification.   ...
19th Century Logic and 21st Century Computing
19th Century Logic and 21st Century Computing

... that from assumptions A and B one can deduce A ∧ B. But it does so in a roundabout way: it first demonstrates that from no assumptions one can deduce (B∧A) → (A∧B), and that from the assumptions A and B one can deduce B ∧ A, and then applies modus ponens. One might reasonably expect that such a proo ...
Joy: Forth`s Functional Cousin
Joy: Forth`s Functional Cousin

implementation of the viterbi algorithm using functional
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 ...
Functional Programming
Functional Programming

... Extensive polymorphism Structured function returns Constructors for aggregate objects Garbage collection ...
Chapter 15 slides - University of Hawaii
Chapter 15 slides - University of Hawaii

... conditional expressions, recursion, and functional forms to control program execution instead of imperative features such as variables and assignments • LISP began as a purely functional language and later included imperative features • Scheme is a relatively simple dialect of LISP that uses static ...
PPT
PPT

... Relation between arrays and pointers • An array is treated as a pointer to first element • E1[E2] is equivalent to ptr dereference *((E1)+(E2)) • Pointer arithmetic is not common in other languages ...
Haskell exercises set 1
Haskell exercises set 1

... 24. The function take takes as input a positive integer n and a list, and gives back as output the list consisting of the first n elements of the input-list (in order). The function drop takes as input a postitive integer b and a list, and gives back as output the list obtained by removing the first ...
Concepts of Programming Languages A Brief Intro to Programming
Concepts of Programming Languages A Brief Intro to Programming

... ‣ is a polymorphic, statically typed, lazy, purely functional language ...
Programming Languages and Compilers (CS 421)
Programming Languages and Compilers (CS 421)

Functional Programming, an introduction
Functional Programming, an introduction

... • You can think of it as f "waiting" for the rest of the parameters. Thus i will be a function of two parameters, the two parameters that f is "waiting" for. • A nice way to think of this is that all functions are really just a function of zero or a single parameter. • The function f a b c is the fu ...
Miranda * A Functional Language
Miranda * A Functional Language

... • Executable “mathematics” with “minimal” programming syntax • Uses “ordinary” mathematical notation • Single assignment “variables” ...
Scheme [PPT]
Scheme [PPT]

... Programming paradigms ...
PowerPoint
PowerPoint

... conditional expressions, recursion, and functional forms to control program execution instead of imperative features such as variables and assignments • LISP began as a purely functional language and later included imperative features • Scheme is a relatively simple dialect of LISP that uses static ...
Annotated_Chapter_4_slides
Annotated_Chapter_4_slides

...  The symbol  is the Greek letter lambda, and is typed at the keyboard as a backslash \.  In mathematics, nameless functions are usually denoted using the  symbol, as in x  x+x.  In Haskell, the use of the  symbol for nameless functions comes from the lambda calculus, the theory of functions o ...
Function
Function

... Strict vs Non-strict • A function is strict if it returns welldefined results only when the inputs are well-defined. – E.g., In C, “+” and “*” are strict, while “&&” and “||” are not. – E.g., In Ada, “and” and “or” are strict, while “and then” and “or else” are not. ...
Functional Programming, ML, and the λ
Functional Programming, ML, and the λ

... • The SML prompt lets you type either a term or a declaration that binds a variable to a term • Running an ML program is just evaluating a term – The ML evaluator takes the left-most expression that is not a value and reduces it to some simpler expression. Eventually the whole expression is a value ...
2. Functional Programming
2. Functional Programming

... mathematical function of the inputs with no notion of internal state (no side effects ) A pure function can always be counted on to return the same results for the same input parameters No assignments: dangling and/or uninitialized pointer references do not occur Example pure functional programming ...
conditional expressions
conditional expressions

...  The symbol  is the Greek letter lambda, and is typed at the keyboard as a backslash \.  In mathematics, nameless functions are usually denoted using the  symbol, as in x  x+x.  In Haskell, the use of the  symbol for nameless functions comes from the lambda calculus, the theory of functions o ...
conditional expressions
conditional expressions

...  The symbol  is the Greek letter lambda, and is typed at the keyboard as a backslash \.  In mathematics, nameless functions are usually denoted using the  symbol, as in x  x+x.  In Haskell, the use of the  symbol for nameless functions comes from the lambda calculus, the theory of functions o ...
A Simple and Efficient Compiler for a Minimal
A Simple and Efficient Compiler for a Minimal

... Othello/Reversi competition in OCaml, etc. Parsing, intermediate representations, register allocation, garbage collection, ... ...
PPT
PPT

Introduction to Racket
Introduction to Racket

Modeling C preprocessor metaprograms using purely functional
Modeling C preprocessor metaprograms using purely functional

... use its extracted parameters. Expansion of a macro with non-exhaustive patterns will likely give invalid results, as token pasting will generate a non-existing macro name. Unlike in many functional programming languages, this pattern matching is not trivially compositional: further matching on a val ...
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Closure (computer programming)

In programming languages, closures (also lexical closures or function closures) are a technique for implementing lexically scoped name binding in languages with first-class functions. Operationally, a closure is a record storing a function together with an environment: a mapping associating each free variable of the function (variables that are used locally, but defined in an enclosing scope) with the value or storage location to which the name was bound when the closure was created. A closure—unlike a plain function—allows the function to access those captured variables through the closure's reference to them, even when the function is invoked outside their scope.Example. The following program fragment defines a higher-order function startAt with a parameter x and a nested function incrementBy. The nested function incrementBy has access to x, because incrementBy is in the lexical scope of x, even though x is not local to incrementBy. The function startAt returns a closure containing the function incrementBy, which adds the y value to the x value, and a reference to the variable x from this invocation of startAt, so incrementBy will know where to find it once invoked:function startAt(x) function incrementBy(y) return x + y return incrementByvariable closure1 = startAt(1)variable closure2 = startAt(5)Note that, as startAt returns a function, the variables closure1 and closure2 are of function type. Invoking closure1(3) will return 4, while invoking closure2(3) will return 8. While closure1 and closure2 refer to the same function incrementBy, the associated environments differ, and invoking the closures will bind the name x to two distinct variables with different values in the two invocations, thus evaluating the function to different results.
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