Lambda calculus - Wikipedia
The lambda abstraction decomposed. The indicates the start of a function. is the input parameter. is the body, separated by a dot separator "" from the input parameter. In mathematical logic, the lambda calculus (also written as λ-calculus) is a formal system for expressing computation based on function abstraction and application using variable binding and substitution. Untyped lambda calculus, t
Underscore.js
Table of Contents Collections each, map, inject, detect, select, reject, all, any, include, invoke, pluck, max, min, sortBy, sortedIndex, toArray, size Arrays first, last, compact, flatten, without, uniq, intersect, zip, indexOf Functions bind, bindAll, delay, defer, wrap Objects keys, values, extend, clone, isEqual, isElement, isArray, isFunction, isUndefined Utility uniqueId, template Collection
artima - First Steps to Scala
In this article, you'll follow twelve steps that are designed to help you understand and gain some basic skills in the Scala programming language. Scala is a statically typed, object-oriented programming language that blends imperative and functional programming styles. Scala is designed to integrate easily with applications that run on modern virtual machines, primarily the Java virtual machine (
Currying - Wikipedia
This article is about the mathematical technique. For the cooking process of this name, see Curry. For the leather finishing process, see Currier. For horse grooming, see Currycomb. In mathematics and computer science, currying is the technique of translating a function that takes multiple arguments into a sequence of families of functions, each taking a single argument. In the prototypical exampl
The Scala Programming Language
val fruits = List("apple", "banana", "avocado", "papaya") val countsToFruits = // count how many 'a' in each fruit fruits.groupBy(fruit => fruit.count(_ == 'a')) for (count, fruits) <- countsToFruits do println(s"with 'a' × $count = $fruits") // prints: with 'a' × 1 = List(apple) // prints: with 'a' × 2 = List(avocado) // prints: with 'a' × 3 = List(banana, papaya)
Python: Lambda Functions
Note: Lines beginning with ">>>" and "..." indicate input to Python (these are the default prompts of the interactive interpreter). Everything else is output from Python. Python supports the creation of anonymous functions (i.e. functions that are not bound to a name) at runtime, using a construct called "lambda". This is not exactly the same as lambda in functional programming languages, but it i
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