Introduction to Functional Programming
... purely functional, while SML and Scheme are not. However, there are some small differences of opinion about the precise technical motivation for this distinction. Scheme and Standard ML are predominantly functional but also allow `side effects' (computational effects caused by expression evaluation ...
... purely functional, while SML and Scheme are not. However, there are some small differences of opinion about the precise technical motivation for this distinction. Scheme and Standard ML are predominantly functional but also allow `side effects' (computational effects caused by expression evaluation ...
Lazy evaluation - Computer Science and Engineering
... functions, only values are passed. • It is used in imperative languages such as Java, C, Pascal and functional programming languages such as SML, Scheme etc. • In call by reference the address (reference / pointer) of actual arguments are passed to functions instead of the values. • This computation ...
... functions, only values are passed. • It is used in imperative languages such as Java, C, Pascal and functional programming languages such as SML, Scheme etc. • In call by reference the address (reference / pointer) of actual arguments are passed to functions instead of the values. • This computation ...
Types and Programming Languages
... of fix expressions. There’s a small issue: let allows us to define values as well as functions, but we don’t want to allow recursively-defined values (why not?) A convenient solution is to distinguish between value and function definitions by using the keywords val and fun. let fun f(x:int):int = bo ...
... of fix expressions. There’s a small issue: let allows us to define values as well as functions, but we don’t want to allow recursively-defined values (why not?) A convenient solution is to distinguish between value and function definitions by using the keywords val and fun. let fun f(x:int):int = bo ...
User`s Functions in Standard Prolog
... (atoms and numbers), variables, and subterms introduced (after compilation4 ) by variable instantiation are always data terms. This later means that an evaluation step “is only performed at a (compound) subterm which is not part of a substitution (introduced by previous unification operations), but ...
... (atoms and numbers), variables, and subterms introduced (after compilation4 ) by variable instantiation are always data terms. This later means that an evaluation step “is only performed at a (compound) subterm which is not part of a substitution (introduced by previous unification operations), but ...
Functional Programming in CLEAN
... Many centuries before the advent of digital computers, functions have been used to describe the relation between input and output of processes. Computer programs, too, are descriptions of the way a result can be computed, given some arguments. A natural way to write a computer program is therefore t ...
... Many centuries before the advent of digital computers, functions have been used to describe the relation between input and output of processes. Computer programs, too, are descriptions of the way a result can be computed, given some arguments. A natural way to write a computer program is therefore t ...
02157 Functional Programming - A brief introduction to Lambda
... • Abstraction extends as far as possible to the right, ...
... • Abstraction extends as far as possible to the right, ...
Scala - Dave Reed
... ● Scala is statically typed and variables are statically bound ● When writing code, there are few explicit type definitions because Scala can usually infer the type o E.g. val x = 3 compiler infers that 'x' must be type Int as '3' is a integer literal. I ● Variables in Scala can be declared as eit ...
... ● Scala is statically typed and variables are statically bound ● When writing code, there are few explicit type definitions because Scala can usually infer the type o E.g. val x = 3 compiler infers that 'x' must be type Int as '3' is a integer literal. I ● Variables in Scala can be declared as eit ...
Declarative Programming in Escher
... Indeed, Escher goes well beyond Godel in its ability to allow function de nitions, its higher-order facilities, its improved handling of sets, and its declarative input/output. Escher also goes well beyond Haskell in its ability to run partly-instantiated predicate calls, a familiar feature of logi ...
... Indeed, Escher goes well beyond Godel in its ability to allow function de nitions, its higher-order facilities, its improved handling of sets, and its declarative input/output. Escher also goes well beyond Haskell in its ability to run partly-instantiated predicate calls, a familiar feature of logi ...
Calculating Functional Programs - Research School of Computer
... norm rather than the exception. There is clearly a need for more reliable methods of program construction than the traditional ad hoc methods in use today. What is needed is a science of programming, instead of today’s craft (or perhaps black art). As Jeremy Gunawardena points out [15], computation ...
... norm rather than the exception. There is clearly a need for more reliable methods of program construction than the traditional ad hoc methods in use today. What is needed is a science of programming, instead of today’s craft (or perhaps black art). As Jeremy Gunawardena points out [15], computation ...
funprog
... E1, E2,...,En - E1 should evaluate to a function and then apply the function value of E1 to the arguments given by the values of E2,...,En. In the base case, there are self evaluating expressions (e.g. numbers and symbols). In addition, various special forms such as quote and if must be handled sep ...
... E1, E2,...,En - E1 should evaluate to a function and then apply the function value of E1 to the arguments given by the values of E2,...,En. In the base case, there are self evaluating expressions (e.g. numbers and symbols). In addition, various special forms such as quote and if must be handled sep ...
Programming with Miranda
... language implementation (perhaps a compiler or an interpreter) to convert this description into a list of instructions for a computer to run.4 There are a number of implications of this alternative computational model: 1. A programmer does not have to worry about storage allocation. There is no assi ...
... language implementation (perhaps a compiler or an interpreter) to convert this description into a list of instructions for a computer to run.4 There are a number of implications of this alternative computational model: 1. A programmer does not have to worry about storage allocation. There is no assi ...
Programming Language Theory and its Implementation
... the correctness of the algorithm for compiling functional programs to combinators (see Section 8.2) proving the correctness of compiling algorithms for imperative languages is usually extremely dicult 13, 54, 62]. Although functional programs execute more slowly than imperative ones on current co ...
... the correctness of the algorithm for compiling functional programs to combinators (see Section 8.2) proving the correctness of compiling algorithms for imperative languages is usually extremely dicult 13, 54, 62]. Although functional programs execute more slowly than imperative ones on current co ...
Computational lambda calculus: A combination of functional and
... calculus we can express it as a lambda abstraction AF. AH. ) which is LMNNO = A. AF. F which is a function of one argument that, when applied, returns as an output another function that accepts a second argument and then calculates a result in the same way as . This technique was invented by Mo ...
... calculus we can express it as a lambda abstraction AF. AH. ) which is LMNNO = A. AF. F which is a function of one argument that, when applied, returns as an output another function that accepts a second argument and then calculates a result in the same way as . This technique was invented by Mo ...
Functional Programming Pure Functional Programming
... • Why is iteration not very useful in functional programming? ...
... • Why is iteration not very useful in functional programming? ...
The Conception, Evolution, and Application of Functional
... languages: simply drop the assignment statement and any other side-effecting primitives, and there you have it! This, of course, is very misleading. The result of such a derivation is usually far less than satisfactory, since the purely functional subset of most imperative languages is hopelessly wea ...
... languages: simply drop the assignment statement and any other side-effecting primitives, and there you have it! This, of course, is very misleading. The result of such a derivation is usually far less than satisfactory, since the purely functional subset of most imperative languages is hopelessly wea ...
Functional Programming
... effective computation. Lambda calculus works with anonymous unary functions and the core action is the function application. In particular, function application is performed by a purely substitutive process: the (free) occurrences , within the function body, of the formal parameter of the function a ...
... effective computation. Lambda calculus works with anonymous unary functions and the core action is the function application. In particular, function application is performed by a purely substitutive process: the (free) occurrences , within the function body, of the formal parameter of the function a ...
Pragmatic Functional Programming in Dyalog
... • Be pragmatic: Stay functional where you can • Use objects and mute state when you must • Languages like APL will be the solution to the next BIG problem after concurrency: ...
... • Be pragmatic: Stay functional where you can • Use objects and mute state when you must • Languages like APL will be the solution to the next BIG problem after concurrency: ...
Lecture Notes
... This course is about computing. The notion of computing is much more fundamental than the notion of a computer, because computing can be done even without one. In fact, we have been computing ever since we entered primary school, mainly using pencil and paper. Since then, we have been adding, subtra ...
... This course is about computing. The notion of computing is much more fundamental than the notion of a computer, because computing can be done even without one. In fact, we have been computing ever since we entered primary school, mainly using pencil and paper. Since then, we have been adding, subtra ...
The Continuity of Monadic Stream Functions
... different diagnosis of the paradox. The construction of the evil function has an input sequence as a parameter. But in Brouwer’s conception there is a clear distinction between sequences, that are non-computable, and functions, that must be effectively computable. Therefore we should not allow the d ...
... different diagnosis of the paradox. The construction of the evil function has an input sequence as a parameter. But in Brouwer’s conception there is a clear distinction between sequences, that are non-computable, and functions, that must be effectively computable. Therefore we should not allow the d ...
Slide 1
... – Functional programming: SML, Haskell, OCaml, Lisp, Scheme, F#, … • Orthogonal concept: – Object-oriented programming: C++, Java, OCaml, … ...
... – Functional programming: SML, Haskell, OCaml, Lisp, Scheme, F#, … • Orthogonal concept: – Object-oriented programming: C++, Java, OCaml, … ...
Example
... arithmetic expressions the output is expected to be in a format suitable to direct evaluation. It is wellknown that an expression like 1+3*2 requires first the multiplication and then the addition and this should be achieved through a more proper format of this expression. Such a format derives from ...
... arithmetic expressions the output is expected to be in a format suitable to direct evaluation. It is wellknown that an expression like 1+3*2 requires first the multiplication and then the addition and this should be achieved through a more proper format of this expression. Such a format derives from ...
Functional Programming in Haskell
... • Values don't change over program execution: contrast x=x+1 etc. of Java, C, … •… instead we describe relations between values by means of (fixed) functions. ...
... • Values don't change over program execution: contrast x=x+1 etc. of Java, C, … •… instead we describe relations between values by means of (fixed) functions. ...
Class Notes 2b: Scheme Reference
... • Programs and data in functional programming languages have the same syntax. – We write function applications, function composition and conditional expressions as lists, in a parenthesized prefix form. – Context helps distinguish program and data. ...
... • Programs and data in functional programming languages have the same syntax. – We write function applications, function composition and conditional expressions as lists, in a parenthesized prefix form. – Context helps distinguish program and data. ...