This article discusses the programming language LISP. The
... we want to add. Another way to look at this is to think of + as a function of two arguments +(x; y); so when we want to add, say 3 and 4 we can write +(3; 4) and when we evaluate the function it returns the value 7, the sum of x and y. We can easily generalize this idea and de¯ne any function f with ...
... we want to add. Another way to look at this is to think of + as a function of two arguments +(x; y); so when we want to add, say 3 and 4 we can write +(3; 4) and when we evaluate the function it returns the value 7, the sum of x and y. We can easily generalize this idea and de¯ne any function f with ...
Lambda-Lifting in Quadratic Time
... Johnsson’s algorithm descends recursively through the program structure, calculating the set of variables that are needed by each function. This is done by solving set equations describing the dependencies between functions. These dependencies may be arbitrarily complex, since a function can depend ...
... Johnsson’s algorithm descends recursively through the program structure, calculating the set of variables that are needed by each function. This is done by solving set equations describing the dependencies between functions. These dependencies may be arbitrarily complex, since a function can depend ...
Functional Programming
... First class functions and higher order functions • Functions are first-class values – Have the same status as variables in imperative languages – Have the same status as objects in object oriented languages ...
... First class functions and higher order functions • Functions are first-class values – Have the same status as variables in imperative languages – Have the same status as objects in object oriented languages ...
scheme1 - Computer Science and Electrical Engineering
... interpreted as data (i.e., a list of four elements) or code (calling function ‘A’ to the three parameters B, C, and D) • Reliance on Recursion – iteration is provided too, but recursion is considered more natural and elegant • Garbage Collection – frees programmer’s explicit memory management ...
... interpreted as data (i.e., a list of four elements) or code (calling function ‘A’ to the three parameters B, C, and D) • Reliance on Recursion – iteration is provided too, but recursion is considered more natural and elegant • Garbage Collection – frees programmer’s explicit memory management ...
Functional Programming: Scheme
... • Scheme functions are first-class objects: – functions can be created dynamically, stored in data structures, returned as results of expressions or other functions. • functions are defined as lists ⇒ can be treated as data. Lecture 11 ...
... • Scheme functions are first-class objects: – functions can be created dynamically, stored in data structures, returned as results of expressions or other functions. • functions are defined as lists ⇒ can be treated as data. Lecture 11 ...
1 Salient Features of Functional Programming
... • This makes code correctness reasoning (by man or machine) even harder: – It is not enough to look at a piece of code by itself. – Instead, the reasoning must be over all states in which it might be executed — and it is easy to miss some cases because the code does not show the states. – Even subst ...
... • This makes code correctness reasoning (by man or machine) even harder: – It is not enough to look at a piece of code by itself. – Instead, the reasoning must be over all states in which it might be executed — and it is easy to miss some cases because the code does not show the states. – Even subst ...
Functional Programming in Scheme Functional Programming
... – LISP, Scheme, other functional languages also support iteration, assignment, etc. – We will cover some of these “impure” elements but emphasize the functional portion ...
... – LISP, Scheme, other functional languages also support iteration, assignment, etc. – We will cover some of these “impure” elements but emphasize the functional portion ...
ppt
... – LISP, Scheme, other functional languages also support iteration, assignment, etc. – We will cover some of these “impure” elements but emphasize the functional portion ...
... – LISP, Scheme, other functional languages also support iteration, assignment, etc. – We will cover some of these “impure” elements but emphasize the functional portion ...
Part 1
... E.g., a function rand, which returns a (pseudo) random value, cannot be referentially transparent since it depends on the state of the machine (and previous calls to itself) ...
... E.g., a function rand, which returns a (pseudo) random value, cannot be referentially transparent since it depends on the state of the machine (and previous calls to itself) ...
Functional Programming
... First-class function values: the ability of functions to return newly constructed functions Higher-order functions: functions that take other functions as input parameters or return functions Polymorphism: the ability to write functions that operate on more than one type of data Aggregate constructs ...
... First-class function values: the ability of functions to return newly constructed functions Higher-order functions: functions that take other functions as input parameters or return functions Polymorphism: the ability to write functions that operate on more than one type of data Aggregate constructs ...
ppt
... • You can open code saved in a file. Racket uses the extension “.rkt” so consider the following file “factorial.rkt” created with a text editor or saved from Racket: 2: Run 1: Open (define factorial (lambda (n) (cond ((= n 1) 1) (else (* n (factorial (- n 1)))) ...
... • You can open code saved in a file. Racket uses the extension “.rkt” so consider the following file “factorial.rkt” created with a text editor or saved from Racket: 2: Run 1: Open (define factorial (lambda (n) (cond ((= n 1) 1) (else (* n (factorial (- n 1)))) ...
06-Recursion
... smaller versions of itself is called recursion Recursion is a powerful way to solve some certain problems for which the solution otherwise will be very complicated Example: Factorail , Fibonacci numbers and Towers of Hanoi ...
... smaller versions of itself is called recursion Recursion is a powerful way to solve some certain problems for which the solution otherwise will be very complicated Example: Factorail , Fibonacci numbers and Towers of Hanoi ...
Slides - Chapter 10
... extends right all the way to the first unmatched right parentheses, or the end of the whole expression if there is no such parenthesis – In (λx. λy. λz.e) a b c, the initial function takes a single argument and returns a function (of one argument) that returns a function (of one argument) – To reduc ...
... extends right all the way to the first unmatched right parentheses, or the end of the whole expression if there is no such parenthesis – In (λx. λy. λz.e) a b c, the initial function takes a single argument and returns a function (of one argument) that returns a function (of one argument) – To reduc ...
slides
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) x * x * x and g (x) x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) x * x * x and g (x) x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
15. Functional Programming Languages.
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) ∫ x * x * x and g (x) ∫ x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) ∫ x * x * x and g (x) ∫ x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
Chapter 14 Functional Programming Languages
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) ≡ x * x * x and g (x) ≡ x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
... A functional form that takes a list of functions as parameters and yields a list of the results of applying each of its parameter functions to a given parameter Form: [f, g] For f (x) ≡ x * x * x and g (x) ≡ x + 3, [f, g] (4) yields (64, 7) 3. Apply-to-all A functional form that takes a single funct ...
Document
... - Similar to ML (syntax, static scoped, strongly typed, type inferencing) - Different from ML (and most other functional languages) in that it is PURELY functional (e.g., no variables, no assignment statements, and no side effects of any kind) - Most Important Features - Uses lazy evaluation (evalua ...
... - Similar to ML (syntax, static scoped, strongly typed, type inferencing) - Different from ML (and most other functional languages) in that it is PURELY functional (e.g., no variables, no assignment statements, and no side effects of any kind) - Most Important Features - Uses lazy evaluation (evalua ...
Proof for functional programming - University of Kent School of
... added to the language. These we look at now. The de ning forms of languages are more complex than simple equations. Section 3 looks at conditional de nitions (using `guards'), pattern matching and local de nitions (in let and where clauses) each of which adds complications, not least when the featur ...
... added to the language. These we look at now. The de ning forms of languages are more complex than simple equations. Section 3 looks at conditional de nitions (using `guards'), pattern matching and local de nitions (in let and where clauses) each of which adds complications, not least when the featur ...
NHS 111 Minimum Dataset
... end of the episode when the user hangs up following initial call or call back. This is not the length of talk time, rather the whole time from beginning to end of episode. Give detail in minutes. Some sites record and some cannot record very short episodes (e.g. where patient has dialled by mistake) ...
... end of the episode when the user hangs up following initial call or call back. This is not the length of talk time, rather the whole time from beginning to end of episode. Give detail in minutes. Some sites record and some cannot record very short episodes (e.g. where patient has dialled by mistake) ...
ppt - FSU Computer Science
... Useful features are found in functional languages that are often missing in procedural languages or have been adopted by modern programming languages: • First-class function values: the ability of functions to return newly constructed functions. • Higher-order functions: functions that take other fu ...
... Useful features are found in functional languages that are often missing in procedural languages or have been adopted by modern programming languages: • First-class function values: the ability of functions to return newly constructed functions. • Higher-order functions: functions that take other fu ...
Functional Programming
... – simulates looping via recursion – simulates blocks via functional composition ...
... – simulates looping via recursion – simulates blocks via functional composition ...
Lecture 21 - FSU Computer Science
... • Focus is on what the computer should do, not how it should be done. • Declarative programming is “the act of programming in languages that conform to the mental model of the developer rather than the operational model of the machine”. • Like giving an address to your house instead of outlining the ...
... • Focus is on what the computer should do, not how it should be done. • Declarative programming is “the act of programming in languages that conform to the mental model of the developer rather than the operational model of the machine”. • Like giving an address to your house instead of outlining the ...
functional form
... – Lisp is the second-oldest high-level programming language in widespread use today (Fortran is the oldest) – The name LISP strands for "LISt Processing“ – The original LISP uses dynamic scope ...
... – Lisp is the second-oldest high-level programming language in widespread use today (Fortran is the oldest) – The name LISP strands for "LISt Processing“ – The original LISP uses dynamic scope ...
val
... • A static-scoped functional language with syntax that is closer to Pascal than to LISP • Uses type declarations, but also does type inferencing to determine the types of undeclared variables • It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions • Does not have im ...
... • A static-scoped functional language with syntax that is closer to Pascal than to LISP • Uses type declarations, but also does type inferencing to determine the types of undeclared variables • It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions • Does not have im ...