Functional Programming Languages (LISP/ Scheme)
... # A functional language provides the following: 1) A set of primitive functions (car, cdr, cons, etc.) 2) A set of functional forms to form complex functions from primitive ones. (define, defun, etc.) 3) A function application operation. (eval) 4) Some structure or structures for storing data. (Defi ...
... # A functional language provides the following: 1) A set of primitive functions (car, cdr, cons, etc.) 2) A set of functional forms to form complex functions from primitive ones. (define, defun, etc.) 3) A function application operation. (eval) 4) Some structure or structures for storing data. (Defi ...
Lecture 11 - Nipissing University Word
... The special form let is a function that provides a way of introducing temporary variables or binding local variables. Temporary variables can serve the result of a computation. The general form of let is (let ( (variable1 value1) (variable2 value2) ...
... The special form let is a function that provides a way of introducing temporary variables or binding local variables. Temporary variables can serve the result of a computation. The general form of let is (let ( (variable1 value1) (variable2 value2) ...
Lisp vs Scheme
... • objects can change their classes at runtime • classes can change their definitions at runtime • multi-methods, specialized on classes or single objects • (user-defined) method combinations • all important aspects can be configured via the CLOS MOP ...
... • objects can change their classes at runtime • classes can change their definitions at runtime • multi-methods, specialized on classes or single objects • (user-defined) method combinations • all important aspects can be configured via the CLOS MOP ...
Chapter_4
... 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 ...
... 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 ...
ppt
... Only bound variables can be renamed. No free variables can be captured (become bound) in the process. For example, we cannot alpha-rename x to y. ...
... Only bound variables can be renamed. No free variables can be captured (become bound) in the process. For example, we cannot alpha-rename x to y. ...
A short introduction to the Lambda Calculus
... 2. Expressions in the λ-calculus. The λ-calculus is a notation for functions. It is extremely economical but at first sight perhaps somewhat cryptic, which stems from its origins in mathematical logic. Expressions in the λ-calculus are written in strict prefix form, that is, there are no infix or po ...
... 2. Expressions in the λ-calculus. The λ-calculus is a notation for functions. It is extremely economical but at first sight perhaps somewhat cryptic, which stems from its origins in mathematical logic. Expressions in the λ-calculus are written in strict prefix form, that is, there are no infix or po ...
The scope of local v..
... • Therefore, there are 2 different variables with the same name (r) inside the inner scope • Houston, we have a problem... ...
... • Therefore, there are 2 different variables with the same name (r) inside the inner scope • Houston, we have a problem... ...
ppt - Dave Reed
... with tail-recursion, don't need to retain current activation record when make call can discard the current activation record, push record for new recursive call thus, no limit on recursion depth (each recursive call reuses the same memory) Scheme interpreters are required to perform this tail- ...
... with tail-recursion, don't need to retain current activation record when make call can discard the current activation record, push record for new recursive call thus, no limit on recursion depth (each recursive call reuses the same memory) Scheme interpreters are required to perform this tail- ...
08 – Functional Paradigm and Scheme
... when the loop should stop. Without any state changes, all loops would be infinite loops! So, pure functional languages also do not contain loops. At first, the inability to use variables or loops probably seems extremely limiting – even disastrous! However, the paradigm does support recursion, and t ...
... when the loop should stop. Without any state changes, all loops would be infinite loops! So, pure functional languages also do not contain loops. At first, the inability to use variables or loops probably seems extremely limiting – even disastrous! However, the paradigm does support recursion, and t ...
ppt - Dave Reed
... note: an if-expression is a special form is not considered a functional expression, doesn’t follow standard evaluation rules (if (list? x) (car x) (list x)) ...
... note: an if-expression is a special form is not considered a functional expression, doesn’t follow standard evaluation rules (if (list? x) (car x) (list x)) ...
ppt - Dave Reed
... with tail-recursion, don't need to retain current activation record when make call can discard the current activation record, push record for new recursive call thus, no limit on recursion depth (each recursive call reuses the same memory) Scheme interpreters are required to perform this tail- ...
... with tail-recursion, don't need to retain current activation record when make call can discard the current activation record, push record for new recursive call thus, no limit on recursion depth (each recursive call reuses the same memory) Scheme interpreters are required to perform this tail- ...
List
... • You can open code saved in a file. DrScheme uses the extension “.scm” so consider the following file “fact.scm” created with a text editor or saved from DrScheme: ...
... • You can open code saved in a file. DrScheme uses the extension “.scm” so consider the following file “fact.scm” created with a text editor or saved from DrScheme: ...
Here
... • Concept first used by Dijkstra in 1968 as gotoless programming. • Called structured programming in early 1970s• Program only with if, while and sequence control structures. ...
... • Concept first used by Dijkstra in 1968 as gotoless programming. • Called structured programming in early 1970s• Program only with if, while and sequence control structures. ...
Ch1516rev
... inferencing to determine the types of undeclared variables (will see in Chapter 5) It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions Includes exception handling and a module facility for implementing abstract data types ...
... inferencing to determine the types of undeclared variables (will see in Chapter 5) It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions Includes exception handling and a module facility for implementing abstract data types ...
Chapter 1
... inferencing to determine the types of undeclared variables (will see in Chapter 5) It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions Includes exception handling and a module facility for implementing abstract data types ...
... inferencing to determine the types of undeclared variables (will see in Chapter 5) It is strongly typed (whereas Scheme is essentially typeless) and has no type coercions Includes exception handling and a module facility for implementing abstract data types ...
Defining Functions
... (1) Consider a function safetail that behaves in the same way as tail, except that safetail maps the empty list to the empty list, whereas tail gives an error in this case. Define safetail using: (a) a conditional expression; ...
... (1) Consider a function safetail that behaves in the same way as tail, except that safetail maps the empty list to the empty list, whereas tail gives an error in this case. Define safetail using: (a) a conditional expression; ...
bYTEBoss control
... • Function representing the rest of the program • Generalized form of tail recursion • Used in Lisp and ML compilation, some OS projects, web application development, … ...
... • Function representing the rest of the program • Generalized form of tail recursion • Used in Lisp and ML compilation, some OS projects, web application development, … ...