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: ...
C# is a functional programming language
... This talk: is it serious competition for ML and Haskell? ◦ (Note: Java 5 has many but not all of the above features) ...
... This talk: is it serious competition for ML and Haskell? ◦ (Note: Java 5 has many but not all of the above features) ...
Example
... Parsing is not only a verification step. Almost always an output is expected. In the case of the 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 th ...
... Parsing is not only a verification step. Almost always an output is expected. In the case of the 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 th ...
Functional Programming Pure Functional Programming
... • Why is iteration not very useful in functional programming? ...
... • Why is iteration not very useful in functional programming? ...
Lazy Evaluation in Numeric Computing
... • Not closed set of operators with matrices and vectors are presented – Instead of vectors/matrices operator “*” one should use a generic function prod (mv1, mv2) provided for all needed cases – uBLAS Vectors and Matrices operators are not presented as an algebraic system (for instance “-1”, “|| ||” ...
... • Not closed set of operators with matrices and vectors are presented – Instead of vectors/matrices operator “*” one should use a generic function prod (mv1, mv2) provided for all needed cases – uBLAS Vectors and Matrices operators are not presented as an algebraic system (for instance “-1”, “|| ||” ...
Functional Programming and Compiler Design
... We evaluate the guards in sequence; we only look at the second if the first is False and so on … ...
... We evaluate the guards in sequence; we only look at the second if the first is False and so on … ...
Functional Programming - II
... • A functional program consists of an expression, not a sequence of statements. • Higher-order functions are first-class citizen in the language. – It can be nameless • List processing is convenient and expressive • In ML, every expression must be well-typed. • Algebraic data types empowers the lang ...
... • A functional program consists of an expression, not a sequence of statements. • Higher-order functions are first-class citizen in the language. – It can be nameless • List processing is convenient and expressive • In ML, every expression must be well-typed. • Algebraic data types empowers the lang ...
scheme1
... • Functional Programming Style – computation done by applying functions to arguments, functions are first class objects, minimal use of side-effects • Uniform Representation of Data and Code – (A B C D) can be interpreted as data (i.e., a list of four elements) or code (calling function ‘A’ to the t ...
... • Functional Programming Style – computation done by applying functions to arguments, functions are first class objects, minimal use of side-effects • Uniform Representation of Data and Code – (A B C D) can be interpreted as data (i.e., a list of four elements) or code (calling function ‘A’ to the t ...
CM20167 Topic 6: Some sorting algorithms
... However, they only work for sorting lists whose elements can be compared using <. This works for numbers and strings, but probably not much else. It would be better to allow an arbitrary comparison function, so that we can sort different kinds of list. Suppose we have a comparison function comp such ...
... However, they only work for sorting lists whose elements can be compared using <. This works for numbers and strings, but probably not much else. It would be better to allow an arbitrary comparison function, so that we can sort different kinds of list. Suppose we have a comparison function comp such ...
scheme1 - Department of Computer Science and Electrical
... • S-expression as the universal data type – either at atom (e.g., number, symbol) or a list of atoms or sublists • Functional Programming Style – computation done by applying functions to arguments, functions are first class objects, minimal use of side-effects • Uniform Representation of Data & Cod ...
... • S-expression as the universal data type – either at atom (e.g., number, symbol) or a list of atoms or sublists • Functional Programming Style – computation done by applying functions to arguments, functions are first class objects, minimal use of side-effects • Uniform Representation of Data & Cod ...
Slide 1
... exists : ('a -> bool) -> 'a list -> bool for_all : ('a -> bool) -> 'a list -> bool map : ('a -> 'b) -> 'a list -> 'b list filter : ('a -> bool) -> 'a list -> 'a list iter : ('a -> unit) -> 'a list -> unit ...
... exists : ('a -> bool) -> 'a list -> bool for_all : ('a -> bool) -> 'a list -> bool map : ('a -> 'b) -> 'a list -> 'b list filter : ('a -> bool) -> 'a list -> 'a list iter : ('a -> unit) -> 'a list -> unit ...
X - Rensselaer Polytechnic Institute: Computer Science
... • Defines what are the legal programs, i.e. programs that can be executed by a machine (interpreter) • Syntax is defined by grammar rules • A grammar defines how to make ‘sentences’ out of ...
... • Defines what are the legal programs, i.e. programs that can be executed by a machine (interpreter) • Syntax is defined by grammar rules • A grammar defines how to make ‘sentences’ out of ...
Functional Languages
... mymax(x,y) = if x > y then x else y – Haskell infers factorial is an Ord function ...
... mymax(x,y) = if x > y then x else y – Haskell infers factorial is an Ord function ...
programming in haskell
... x:xs patterns must be parenthesised, because application has priority over (:). For example, the following definition gives an error: head x:_ = x ...
... x:xs patterns must be parenthesised, because application has priority over (:). For example, the following definition gives an error: head x:_ = x ...
Introduction-to
... Add python to PATH to run scripts from command line Python is available for most platforms, even mobile. Most Linux distributions have Python as package(s) ...
... Add python to PATH to run scripts from command line Python is available for most platforms, even mobile. Most Linux distributions have Python as package(s) ...
3. High-Level Functional Programming
... type to demonstrate properties of information structures. Later we will show how to construct some functions on our own. First, however, we want to get more practice in simply using functions. This will help in thinking at a relatively high level about information structures and functions that use t ...
... type to demonstrate properties of information structures. Later we will show how to construct some functions on our own. First, however, we want to get more practice in simply using functions. This will help in thinking at a relatively high level about information structures and functions that use t ...
An Operational Semantics for Declarative Multi
... “f t1 . . . tn = e” where f is a function, t1 , . . . , tn are data terms (i.e., without occurrences of defined functions), the left-hand side f t1 . . . tn is linear (i.e., without multiple occurrences of variables), and e is a well-formed expression. A rule is applicable if its left-hand side matc ...
... “f t1 . . . tn = e” where f is a function, t1 , . . . , tn are data terms (i.e., without occurrences of defined functions), the left-hand side f t1 . . . tn is linear (i.e., without multiple occurrences of variables), and e is a well-formed expression. A rule is applicable if its left-hand side matc ...
5. Functional Programming
... programming language incorporating many recent innovations in programming language design. Haskell provides higher-order functions, non-strict semantics, static polymorphic typing, user-defined algebraic datatypes, pattern-matching, list comprehensions, a module system, a monadic I/O system, and a r ...
... programming language incorporating many recent innovations in programming language design. Haskell provides higher-order functions, non-strict semantics, static polymorphic typing, user-defined algebraic datatypes, pattern-matching, list comprehensions, a module system, a monadic I/O system, and a r ...
5. Functional Programming
... programming language incorporating many recent innovations in programming language design. Haskell provides higher-order functions, non-strict semantics, static polymorphic typing, user-defined algebraic datatypes, pattern-matching, list comprehensions, a module system, a monadic I/O system, and a r ...
... programming language incorporating many recent innovations in programming language design. Haskell provides higher-order functions, non-strict semantics, static polymorphic typing, user-defined algebraic datatypes, pattern-matching, list comprehensions, a module system, a monadic I/O system, and a r ...
Maclennan-chap9-Lisp.ppt
... binds the name (atom) text to the (to be or not to be) that it is a list and return this list. The atom n can now be used as a name for this list in any expression, for example (set ‘Freq (make-table text nil)) ...
... binds the name (atom) text to the (to be or not to be) that it is a list and return this list. The atom n can now be used as a name for this list in any expression, for example (set ‘Freq (make-table text nil)) ...
What is a Program?
... to Share — to copy, distribute and transmit the work to Remix — to adapt the work Under the following conditions: Attribution. You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Share Alike. ...
... to Share — to copy, distribute and transmit the work to Remix — to adapt the work Under the following conditions: Attribution. You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Share Alike. ...
The Conception, Evolution, and Application of Functional
... the functional programming paradigm. The term referentially transparent is often used to describe this style of programming, in which “equals can be replaced by equals.” For example, consider the (Haskell) expression: ... x+x ... where x = f a The function application (f a) may be substituted for an ...
... the functional programming paradigm. The term referentially transparent is often used to describe this style of programming, in which “equals can be replaced by equals.” For example, consider the (Haskell) expression: ... x+x ... where x = f a The function application (f a) may be substituted for an ...
Introducing Haskell COS 441 Slides 3 Slide content credits:
... Expressions, Values, Types • The phrases on which we calculate are called expressions. • When no more unfolding of user-defined functions or application of primitives like + is possible, the resulting expression is called a value. • A type is a collection of expressions with common attributes. Ever ...
... Expressions, Values, Types • The phrases on which we calculate are called expressions. • When no more unfolding of user-defined functions or application of primitives like + is possible, the resulting expression is called a value. • A type is a collection of expressions with common attributes. Ever ...
Class Notes 2b: Scheme Reference
... • LISP is typically used interactively, like Prolog. – There is no main program. – A LISP program is a collection of functions that may be called, directly or indirectly, from the top level. – The top-level loop evaluates an expression for its value or for its side-effects such as input/output (expr ...
... • LISP is typically used interactively, like Prolog. – There is no main program. – A LISP program is a collection of functions that may be called, directly or indirectly, from the top level. – The top-level loop evaluates an expression for its value or for its side-effects such as input/output (expr ...