Lambda Calculus as a Programming Language
... of the language preserves the syntax of the Lambda calculus and defines a set of free variables as names of λ-expressions with predefined meaning that stand for values of various data types and for data type operators. A language that runs on a conventional machine adds new programming devices on an ...
... of the language preserves the syntax of the Lambda calculus and defines a set of free variables as names of λ-expressions with predefined meaning that stand for values of various data types and for data type operators. A language that runs on a conventional machine adds new programming devices on an ...
COND - Unicauca
... • The design of the functional languages is based on mathematical functions – A solid theoretical basis that is also closer to the user, but relatively unconcerned with the architecture of the machines on which programs ...
... • The design of the functional languages is based on mathematical functions – A solid theoretical basis that is also closer to the user, but relatively unconcerned with the architecture of the machines on which programs ...
Lecture 11 - Nipissing University Word
... A lambda expression has the form: (lambda argument-list function-body ) In other words, a lambda expression is somewhat like defun, except that it defines an unnamed function, or it allows the user to define a function with no name. For example, ((lambda (x y) (+ x y)) 2 3) binds x and y to 2 an ...
... A lambda expression has the form: (lambda argument-list function-body ) In other words, a lambda expression is somewhat like defun, except that it defines an unnamed function, or it allows the user to define a function with no name. For example, ((lambda (x y) (+ x y)) 2 3) binds x and y to 2 an ...
curried functions - Universitatea "Politehnica"
... computations are done via the evaluation of expressions (syntactic terms) to yield values (abstract entities that we regard as answers). Every value has an associated type. 5 :: Integer 'a' :: Char inc :: Integer -> Integer [1,2,3] :: [Integer] ('b',4) :: (Char,Integer) ...
... computations are done via the evaluation of expressions (syntactic terms) to yield values (abstract entities that we regard as answers). Every value has an associated type. 5 :: Integer 'a' :: Char inc :: Integer -> Integer [1,2,3] :: [Integer] ('b',4) :: (Char,Integer) ...
Chapter 1
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
bYTEBoss control
... • Declaration to establish exception handler • Statement or expression to raise or throw exception Often used for unusual or exceptional condition; other uses too ...
... • Declaration to establish exception handler • Statement or expression to raise or throw exception Often used for unusual or exceptional condition; other uses too ...
Functional Programming
... may stop with the weak head normal form λy.(λx.x y) or with the normal form λy.y depending on the convention we follow. When viewing Lambda calculus as a conventional programming language we may stop with the weak head normal form λy.(λx.x y). When investigating theoretically the value of the expres ...
... may stop with the weak head normal form λy.(λx.x y) or with the normal form λy.y depending on the convention we follow. When viewing Lambda calculus as a conventional programming language we may stop with the weak head normal form λy.(λx.x y). When investigating theoretically the value of the expres ...
Functional Languages and Higher
... • Solution: heap-allocate function frames • No need for run-time stack • Frames of all lexically enclosing functions are reachable from a closure via static link chains • The GC will collect unused frames • Frames make a lot of garbage look reachable ...
... • Solution: heap-allocate function frames • No need for run-time stack • Frames of all lexically enclosing functions are reachable from a closure via static link chains • The GC will collect unused frames • Frames make a lot of garbage look reachable ...
CMSC330 Summer 2010—Midterm #2
... .h files define available functions with no implementation (b) (3 pts) What is the difference between dynamic and lexical scoping? In dynamic scoping non-local variable names are bound to the closest binding in the runtime call stack. Lexical scoping binds non-local variables to the nearest binding ...
... .h files define available functions with no implementation (b) (3 pts) What is the difference between dynamic and lexical scoping? In dynamic scoping non-local variable names are bound to the closest binding in the runtime call stack. Lexical scoping binds non-local variables to the nearest binding ...
recursive functions
... A new notation: label(a, E) denotes the expression E , provided that occurences of a within E are to be referred as a whole. For example, for the latter function the notation would be label(!, λ((n)(n = 0 → 1, T → n · (n − 1)!) (There is a way to describe recursion in λ-calculus, using Y-combinator, ...
... A new notation: label(a, E) denotes the expression E , provided that occurences of a within E are to be referred as a whole. For example, for the latter function the notation would be label(!, λ((n)(n = 0 → 1, T → n · (n − 1)!) (There is a way to describe recursion in λ-calculus, using Y-combinator, ...
val a = 15
... – If expression is (bound to) atom, return it – Otherwise, expression is a list with head V: • If V is a special form, do the special form • Otherwise, evaluate elements in tail and apply V to tail. ...
... – If expression is (bound to) atom, return it – Otherwise, expression is a list with head V: • If V is a special form, do the special form • Otherwise, evaluate elements in tail and apply V to tail. ...
Chapter 1 - eLisa UGM
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
pl9ch15 - Systems and Computer Engineering
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
Chapter 1
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
A/x - LAMP | EPFL
... ⇒ Tail-recursive functions are iterative processes. More generally, if the last action of a function is a call to another (possible the same) function, only a single stack frame is needed for both functions. Such calls are called “tail calls”. Exercise: ...
... ⇒ Tail-recursive functions are iterative processes. More generally, if the last action of a function is a call to another (possible the same) function, only a single stack frame is needed for both functions. Such calls are called “tail calls”. Exercise: ...
lec4
... Modify the SICP interpreter to use dynamic instead of static scope. Provide an example where the same code provides two different answers depending on which scoping rule is used. ...
... Modify the SICP interpreter to use dynamic instead of static scope. Provide an example where the same code provides two different answers depending on which scoping rule is used. ...
funprog
... To evaluate (E1 E2 ... En), recursively evaluate 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 spec ...
... To evaluate (E1 E2 ... En), recursively evaluate 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 spec ...
Functional Programming
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
The gist of side effects in pure functional languages
... Functional programming is based on two central ideas: (1) computation takes place by evaluating applications of functions to arguments and (2) functions are first-class values. In particular, functions are higher-order (can be passed to or be returned by other functions) and can be components of dat ...
... Functional programming is based on two central ideas: (1) computation takes place by evaluating applications of functions to arguments and (2) functions are first-class values. In particular, functions are higher-order (can be passed to or be returned by other functions) and can be components of dat ...
Ch15-w
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
Chapter 15 Slides - SRU Computer Science
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...
... • The basic process of computation is fundamentally different in a FPL than in an imperative language – In an imperative language, operations are done and the results are stored in variables for later use – Management of variables is a constant concern and source of complexity for imperative program ...