Compiling Purely Functional Structured Programs
... depending on whether we evaluate the outer application right-to-left or left-to-right. Compilation of functional programs via CPS transformation was the basis for the classic text Compiling with Continuations [2], but the approach has notoriously fallen out of favour. Compiler toolchains such as LLV ...
... depending on whether we evaluate the outer application right-to-left or left-to-right. Compilation of functional programs via CPS transformation was the basis for the classic text Compiling with Continuations [2], but the approach has notoriously fallen out of favour. Compiler toolchains such as LLV ...
Abstract Interpretation - Dipartimento di Informatica
... – C has the structure of a powerset abstract domain (A, ) – each abstract value is a description of “a set of” concrete values ...
... – C has the structure of a powerset abstract domain (A, ) – each abstract value is a description of “a set of” concrete values ...
Lambda the Ultimate - Rice University Campus Wiki
... that the rule uses safe substitution, where safe substitution renames local variables in the code body that is being modified by the substitution to avoid capturing free variables in the argument expression that is being ...
... that the rule uses safe substitution, where safe substitution renames local variables in the code body that is being modified by the substitution to avoid capturing free variables in the argument expression that is being ...
User`s Functions in Standard Prolog
... point. If fib(K) is to be evaluated, and K\=1, and K\=0, no choice point is generated, because first argument indexing rules out the second and the third pln clauses.) When the narrowing step above has been performed, expressionθϕ is usually evaluated further, because expression is a pln expression, ...
... point. If fib(K) is to be evaluated, and K\=1, and K\=0, no choice point is generated, because first argument indexing rules out the second and the third pln clauses.) When the narrowing step above has been performed, expressionθϕ is usually evaluated further, because expression is a pln expression, ...
Implementing a non-strict purely functional language in JavaScript
... To emulate Sapl’s non-strict evaluation semantics for function applications, we represented unevaluated expressions (thunks) as arrays in JavaScript. Because JavaScript treats these arrays as primitive values, some way is needed to explicitly reduce thunks to normal form when their value is required ...
... To emulate Sapl’s non-strict evaluation semantics for function applications, we represented unevaluated expressions (thunks) as arrays in JavaScript. Because JavaScript treats these arrays as primitive values, some way is needed to explicitly reduce thunks to normal form when their value is required ...
CM20167 Topic 6: Some sorting algorithms
... Quicksort really begins to win over mergesort when it’s implemented using in-place array update rather than our recursive, list-based version. Comparisons are not the only key operation in sorting: creating the new list or array is costly too. Quicksort beats mergesort hands down on this front. ...
... Quicksort really begins to win over mergesort when it’s implemented using in-place array update rather than our recursive, list-based version. Comparisons are not the only key operation in sorting: creating the new list or array is costly too. Quicksort beats mergesort hands down on this front. ...
Functional programming languages - Part I - Gallium
... Elementary reductions can be chained to describe how a term evaluates: Termination: a → a1 → a2 → . . . → v The value v is the result of evaluating a. Divergence: a → a1 → a2 → . . . → an → . . . The sequence of reductions is infinite. Error: a → a1 → a2 → . . . → an 6→ when an is not a value but do ...
... Elementary reductions can be chained to describe how a term evaluates: Termination: a → a1 → a2 → . . . → v The value v is the result of evaluating a. Divergence: a → a1 → a2 → . . . → an → . . . The sequence of reductions is infinite. Error: a → a1 → a2 → . . . → an 6→ when an is not a value but do ...
Functional vs Imperative Programs
... −−Algebraic laws ◊ Reason about programs ◊ Optimizing compilers ...
... −−Algebraic laws ◊ Reason about programs ◊ Optimizing compilers ...
lec4
... 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 ...
COS220lec52_FP
... Introduction to FP Imperative programming vs. functional programming Language applied to functional programming is LISP – LISt Programming. It was invented to provide language features for list processing, the need for which grew out of the first application in the area of AI, expert systems, knowl ...
... Introduction to FP Imperative programming vs. functional programming Language applied to functional programming is LISP – LISt Programming. It was invented to provide language features for list processing, the need for which grew out of the first application in the area of AI, expert systems, knowl ...
Python - ACE home page
... Lambda expressions (sometimes called lambda forms) have the same syntactic position as expressions. They are a shorthand to create anonymous functions; the expression "lambda arguments: expression” yields a function object. The unnamed object behaves like a function object defined with def( ...
... Lambda expressions (sometimes called lambda forms) have the same syntactic position as expressions. They are a shorthand to create anonymous functions; the expression "lambda arguments: expression” yields a function object. The unnamed object behaves like a function object defined with def
Imperative languages
... Loops – while-do • Repeat a block of commands while (or until) a condition is satisfied – Loop body changes the state of program ...
... Loops – while-do • Repeat a block of commands while (or until) a condition is satisfied – Loop body changes the state of program ...
View
... The syntax for accessing the elements of a list is the same as the syntax for accessing the characters of a string--the bracket operator ([ ]). The expression inside the brackets specifies the index. Remember that the indices start at 0: print numbers[0] numbers[1] = 5 The bracket operator can appea ...
... The syntax for accessing the elements of a list is the same as the syntax for accessing the characters of a string--the bracket operator ([ ]). The expression inside the brackets specifies the index. Remember that the indices start at 0: print numbers[0] numbers[1] = 5 The bracket operator can appea ...