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Snap! (programming Language)
Snap''!'' (formerly Build Your Own Blocks) is a free block-based List of educational programming languages, educational graphical programming language and online community. Snap allows students to explore, create, and remix interactive animations, games, stories, and more, while learning about mathematical and computational ideas. While inspired by Scratch (programming language), Scratch, Snap''!'' has many advanced features. The Snap''!'' editor, and programs created in it, are web applications that run in the browser (like Scratch (programming language), Scratch) without requiring Installation (computer programs), installation. It is built on top of ''Morphic.js'', a Morphic (software), Morphic GUI, written by Jens Mönig as 'middle layer' between Snap! itself and 'bare' JavaScript. User interface In Snap''!'', the screen is organized in three resizable columns containing five regions: the block group selector (top of left column), the blocks palette (left column), the main ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brian Harvey (lecturer)
Brian Keith Harvey (born 1949) is a former Lecturer SOE of computer science at University of California, Berkeley. He and his students developed an educational programming language named UCBLogo which is free and open-source software, a dialect of the language Logo, as an interpreter, for learners. He now works on Snap!. Education He received his B.S. in mathematics at Massachusetts Institute of Technology (MIT), 1969, a M.S. in computer science, Stanford University, 1975, and a Ph.D. in science and mathematics education, University of California, Berkeley, 1985. He also received a M.A. in clinical psychology, New College of California, 1990. Work Until retiring in July 2013, Harvey taught introductory (lower-division) computer science courses at Berkeley, and ''CS 195, Social Implications of Computing''. He was also involved in the development of the language Logo for the use in K-12 education. Together with the German programmer Jens Mönig, Harvey designed the programmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snap!
SNAP! is a German Eurodance group formed in 1989 by producers Michael Münzing and Luca Anzilotti. The act has undergone several lineup changes over the years, featuring American singers, songwriters, and rappers such as Thea Austin, Turbo B, Niki Haris, and Penny Ford. Their most popular hits include " The Power" and " Rhythm Is a Dancer", both of which achieved No. 1 status in multiple countries. History Previous projects Luca Anzilotti and Michael Münzing began collaborating in 1985 in the group Off (Organisation for Fun), alongside Sven Väth. They recorded two albums, ''Organisation for Fun'' (1988) and ''Ask Yourself'' (1989), as well as a series of singles, including " Electrica Salsa", until 1990. In 1986, the duo created the side project 16 BIT and found success with their first single, "Where Are You?" In 1987, they released the album ''Inaxycvgtgb'' for BMG. Formation and first album Anzilotti and Münzing officially formed SNAP! in 1989, adopting the alia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Application
A web application (or web app) is application software that is created with web technologies and runs via a web browser. Web applications emerged during the late 1990s and allowed for the server to dynamically build a response to the request, in contrast to static web pages. Web applications are commonly distributed via a web server. There are several different tier systems that web applications use to communicate between the web browsers, the client interface, and server data. Each system has its own uses as they function in different ways. However, there are many security risks that developers must be aware of during development; proper measures to protect user data are vital. Web applications are often constructed with the use of a web application framework. Single-page applications (SPAs) and progressive web apps (PWAs) are two architectural approaches to creating web applications that provide a user experience similar to native apps, including features such as smoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alonzo Church
Alonzo Church (June 14, 1903 – August 11, 1995) was an American computer scientist, mathematician, logician, and philosopher who made major contributions to mathematical logic and the foundations of theoretical computer science. He is best known for the lambda calculus, the Church–Turing thesis, proving the unsolvability of the ''Entscheidungsproblem'' ("decision problem"), the Frege–Church ontology, and the Church–Rosser theorem. Alongside his doctoral student Alan Turing, Church is considered one of the founders of computer science. Life Alonzo Church was born on June 14, 1903, in Washington, D.C., where his father, Samuel Robbins Church, was a justice of the peace and the judge of the Municipal Court for the District of Columbia. He was the grandson of Alonzo Webster Church (1829–1909), United States Senate Librarian from 1881 to 1901, and great-grandson of Alonzo Church, a professor of Mathematics and Astronomy and 6th President of the University of Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snap! Mascot, Alonzo
SNAP! is a German Eurodance group formed in 1989 by producers Michael Münzing and Luca Anzilotti. The act has undergone several lineup changes over the years, featuring American singers, songwriters, and rappers such as Thea Austin, Turbo B, Niki Haris, and Penny Ford. Their most popular hits include " The Power" and "Rhythm Is a Dancer", both of which achieved No. 1 status in multiple countries. History Previous projects Luca Anzilotti and Michael Münzing began collaborating in 1985 in the group Off (Organisation for Fun), alongside Sven Väth. They recorded two albums, ''Organisation for Fun'' (1988) and ''Ask Yourself'' (1989), as well as a series of singles, including " Electrica Salsa", until 1990. In 1986, the duo created the side project 16 BIT and found success with their first single, "Where Are You?" In 1987, they released the album ''Inaxycvgtgb'' for BMG. Formation and first album Anzilotti and Münzing officially formed SNAP! in 1989, adopting the aliases Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metaprogramming
Metaprogramming is a computer programming technique in which computer programs have the ability to treat other programs as their data. It means that a program can be designed to read, generate, analyse, or transform other programs, and even modify itself, while running. In some cases, this allows programmers to minimize the number of lines of code to express a solution, in turn reducing development time. It also allows programs more flexibility to efficiently handle new situations with no recompiling. Metaprogramming can be used to move computations from runtime to compile time, to generate code using compile time computations, and to enable self-modifying code. The ability of a programming language to be its own metalanguage allows reflective programming, and is termed ''reflection''. Reflection is a valuable language feature to facilitate metaprogramming. Metaprogramming was popular in the 1970s and 1980s using list processing languages such as Lisp. Lisp machine hardware ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C (programming Language)
C (''pronounced'' '' – like the letter c'') is a general-purpose programming language. It was created in the 1970s by Dennis Ritchie and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted Central processing unit, CPUs. It has found lasting use in operating systems code (especially in Kernel (operating system), kernels), device drivers, and protocol stacks, but its use in application software has been decreasing. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems. A successor to the programming language B (programming language), B, C was originally developed at Bell Labs by Ritchie between 1972 and 1973 to construct utilities running on Unix. It was applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually gained popularity. It has become one of the most widely used programming langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python (programming Language)
Python is a high-level programming language, high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is type system#DYNAMIC, dynamically type-checked and garbage collection (computer science), garbage-collected. It supports multiple programming paradigms, including structured programming, structured (particularly procedural programming, procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC (programming language), ABC programming language, and he first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000. Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype-based Programming
Prototype-based programming is a style of object-oriented programming in which behavior reuse (known as inheritance) is performed via a process of reusing existing objects that serve as prototypes. This model can also be known as ''prototypal'', ''prototype-oriented,'' ''classless'', or ''instance-based'' programming. Prototype-based programming uses the process generalized objects, which can then be cloned and extended. Using fruit as an example, a "fruit" object would represent the properties and functionality of fruit in general. A "banana" object would be cloned from the "fruit" object and general properties specific to bananas would be appended. Each individual "banana" object would be cloned from the generic "banana" object. Compare to the class-based paradigm, where a "fruit" ''class'' would be extended by a "banana" ''class''. History The first prototype-based programming languages were Director a.k.a. Ani (on top of MacLisp) (1976-1979), and contemporaneously and no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Class Object
In a given programming language design, a first-class citizen is an entity which supports all the operations generally available to other entities. These operations typically include being passed as an argument, returned from a function, and assigned to a variable. History The concept of first- and second-class objects was introduced by Christopher Strachey in the 1960s. He did not actually define the term strictly, but contrasted real numbers and procedures in ALGOL: First and second class objects. In ALGOL, a real number may appear in an expression or be assigned to a variable, and either of them may appear as an actual parameter in a procedure call. A procedure, on the other hand, may only appear in another procedure call either as the operator (the most common case) or as one of the actual parameters. There are no other expressions involving procedures or whose results are procedures. Thus in a sense procedures in ALGOL are second class citizens—they always have to appear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambda Calculus
In mathematical logic, the lambda calculus (also written as ''λ''-calculus) is a formal system for expressing computability, computation based on function Abstraction (computer science), abstraction and function application, application using variable Name binding, binding and Substitution (algebra), substitution. Untyped lambda calculus, the topic of this article, is a universal machine, a model of computation that can be used to simulate any Turing machine (and vice versa). It was introduced by the mathematician Alonzo Church in the 1930s as part of his research into the foundations of mathematics. In 1936, Church found a formulation which was #History, logically consistent, and documented it in 1940. Lambda calculus consists of constructing #Lambda terms, lambda terms and performing #Reduction, reduction operations on them. A term is defined as any valid lambda calculus expression. In the simplest form of lambda calculus, terms are built using only the following rules: # x: A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Class Function
In computer science, a programming language is said to have first-class functions if it treats functions as first-class citizens. This means the language supports passing functions as arguments to other functions, returning them as the values from other functions, and assigning them to variables or storing them in data structures. Some programming language theorists require support for anonymous functions (function literals) as well. b) -> -> map f [] = [] map f (x:xs) = f x : map f xs Languages where functions are not first-class often still allow one to write higher-order functions through the use of features such as function pointers or delegates. In the language C: void map(int (*f)(int), int x[], size_t n) There are a number of differences between the two approaches that are ''not'' directly related to the support of first-class functions. The Haskell sample operates on lists, while the C sample operates on arrays. Both are the most natural compound data structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
