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QuickCheck
QuickCheck is a software library, specifically a combinator library, originally written in the programming language Haskell, designed to assist in software testing by generating test cases for test suites – an approach known as property testing. Software It is compatible with the compiler, Glasgow Haskell Compiler (GHC) and the interpreter, Haskell User's Gofer System ( Hugs). It is free and open-source software released under a BSD-style license. In QuickCheck, assertions are written about logical properties that a function should fulfill. Then QuickCheck attempts to generate a test case that falsifies such assertions. Once such a test case is found, QuickCheck tries to reduce it to a minimal failing subset by removing or simplifying input data that are unneeded to make the test fail. The project began in 1999. Besides being used to test regular programs, QuickCheck is also useful for building up a functional specification, for documenting what functions should ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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John Hughes (computer Scientist)
R. John M. Hughes, born , is a computer scientist and professor in the department of Computing Science at the Chalmers University of Technology. Contributions In 1984, Hughes received his PhD from the University of Oxford for the thesis "The Design and Implementation of Programming Languages". Hughes is a member of the Functional Programming group at Chalmers, and much of his research relates to the Haskell programming language. He does research in the field of programming languages and is the author of many influential research papers on the subject, including "Why Functional Programming Matters". Hughes is one of the developers of QuickCheck, as well as cofounder and CEO of QuviQ, which provides the QuickCheck software and offers classes in how to use it. In 2016 he appeared in the popular science YouTube channel Computerphile explaining Functional Programming and QuickCheck. Recognition Hughes was elected as an ACM Fellow in 2018 for "contributions to software testing and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Software Testing
Software testing is the act of examining the artifacts and the behavior of the software under test by validation and verification. Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Test techniques include, but not necessarily limited to: * analyzing the product requirements for completeness and correctness in various contexts like industry perspective, business perspective, feasibility and viability of implementation, usability, performance, security, infrastructure considerations, etc. * reviewing the product architecture and the overall design of the product * working with product developers on improvement in coding techniques, design patterns, tests that can be written as part of code based on various techniques like boundary conditions, etc. * executing a program or application with the intent of examining behavior * reviewing the deployment infrastructure a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Combinator Library
A combinator library is a software library which implements combinators for a functional programming language; "the key idea is this: a combinator library offers functions (the combinators) that combine functions together to make bigger functions".pg 35 o"History of Haskell"/ref> These kinds of libraries are particularly useful for allowing domain-specific programming languages to be easily embedded into a general purpose language by defining a few primitive functions for the given domain and turning over the task of expanding higher-level constructs to the general language. An example would be the monadic Parsec parserbr>for Haskell (programming language), Haskell. The library approach allows the parsers to be first-class citizens of the language. See also * Run-time system * QuickCheck QuickCheck is a software library, specifically a combinator library, originally written in the programming language Haskell, designed to assist in software testing by generating test ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Visual Basic
Visual Basic is a name for a family of programming languages from Microsoft. It may refer to: * Visual Basic .NET (now simply referred to as "Visual Basic"), the current version of Visual Basic launched in 2002 which runs on .NET * Visual Basic (classic), the original Visual Basic supported from 1991–2008 * Embedded Visual Basic Embedded Visual Basic or eVB, is an implementation of Microsoft Visual Basic which is geared towards generating programmes for embedded systems such as PDAs, cellular telephones, pocket computers and other programmable electronic systems and devices ..., the classic version geared toward embedded applications * Visual Basic for Applications, an implementation of Visual Basic 6 built into programs such as Microsoft Office and used for writing macros * VBScript, an Active Scripting language {{SIA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Factor (programming Language)
Factor is a stack-oriented programming language created by Slava Pestov. Factor is dynamically typed and has automatic memory management, as well as powerful metaprogramming features. The language has a single implementation featuring a self-hosted optimizing compiler and an interactive development environment. The Factor distribution includes a large standard library. History Slava Pestov created Factor in 2003 as a scripting language for a video game. The initial implementation, now referred to as JFactor, was implemented in Java and ran on the Java Virtual Machine. Though the early language resembled modern Factor superficially in terms of syntax, the modern language is very different in practical terms and the current implementation is much faster. The language has changed significantly over time. Originally, Factor programs centered on manipulating Java objects with Java's reflection capabilities. From the beginning, the design philosophy has been to modify the language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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C Sharp (programming Language)
C# (pronounced ) is a general-purpose, high-level multi-paradigm programming language. C# encompasses static typing, strong typing, lexically scoped, imperative, declarative, functional, generic, object-oriented ( class-based), and component-oriented programming disciplines. The C# programming language was designed by Anders Hejlsberg from Microsoft in 2000 and was later approved as an international standard by Ecma (ECMA-334) in 2002 and ISO/ IEC (ISO/IEC 23270) in 2003. Microsoft introduced C# along with .NET Framework and Visual Studio, both of which were closed-source. At the time, Microsoft had no open-source products. Four years later, in 2004, a free and open-source project called Mono began, providing a cross-platform compiler and runtime environment for the C# programming language. A decade later, Microsoft released Visual Studio Code (code editor), Roslyn (compiler), and the unified .NET platform (software framework), all of which support C# and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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F Sharp (programming Language)
F# (pronounced F sharp) is a functional-first, general purpose, strongly typed, multi-paradigm programming language that encompasses functional, imperative, and object-oriented programming methods. It is most often used as a cross-platform Common Language Infrastructure (CLI) language on .NET, but can also generate JavaScript and graphics processing unit (GPU) code. F# is developed by the F# Software Foundation, Microsoft and open contributors. An open source, cross-platform compiler for F# is available from the F# Software Foundation. F# is a fully supported language in Visual Studio and JetBrains Rider. Plug-ins supporting F# exist for many widely used editors including Visual Studio Code, Vim, and Emacs. F# is a member of the ML language family and originated as a .NET Framework implementation of a core of the programming language OCaml. It has also been influenced by C#, Python, Haskell, Scala and Erlang. History Versions Language evolution F# uses a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Functional Specification
A functional specification (also, ''functional spec'', ''specs'', ''functional specifications document (FSD)'', ''functional requirements specification'') in systems engineering and software development is a document that specifies the functions that a system or component must perform (often part of a requirements specification) (ISO/IEC/IEEE 24765-2010). The documentation typically describes what is needed by the system user as well as requested properties of inputs and outputs (e.g. of the software system). A functional specification is the more technical response to a matching requirements document, e.g. the Product Requirements Document "PRD". Thus it picks up the results of the requirements analysis stage. On more complex systems multiple levels of functional specifications will typically nest to each other, e.g. on the system level, on the module level and on the level of technical details. Overview A functional specification does not define the inner workings of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Erlang (programming Language)
Erlang ( ) is a general-purpose, concurrent, functional programming language, and a garbage-collected runtime system. The term Erlang is used interchangeably with Erlang/OTP, or Open Telecom Platform (OTP), which consists of the Erlang runtime system, several ready-to-use components (OTP) mainly written in Erlang, and a set of design principles for Erlang programs. The Erlang runtime system is designed for systems with these traits: * Distributed * Fault-tolerant *Soft real-time * Highly available, non-stop applications * Hot swapping, where code can be changed without stopping a system. The Erlang programming language has immutable data, pattern matching, and functional programming. The sequential subset of the Erlang language supports eager evaluation, single assignment, and dynamic typing. A normal Erlang application is built out of hundreds of small Erlang processes. It was originally proprietary software within Ericsson, developed by Joe Armstrong, Robert Vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Elixir (programming Language)
Elixir is a functional, concurrent, general-purpose programming language that runs on the BEAM virtual machine which is also used to implement the Erlang programming language. Elixir builds on top of Erlang and shares the same abstractions for building distributed, fault-tolerant applications. Elixir also provides productive tooling and an extensible design. The latter is supported by compile-time metaprogramming with macros and polymorphism via protocols. Elixir is used by companies such as Ramp, PagerDuty, Discord, Brex, E-MetroTel, Pinterest, Moz, Bleacher Report, The Outline, Inverse, Divvy, FarmBot and for building embedded systems. The community organizes yearly events in the United States, Europe, and Japan, as well as minor local events and conferences. History José Valim is the creator of the Elixir programming language, a research and development project created at Plataformatec. His goals were to enable higher extensibility and productivity in the Erlan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Elm (programming Language)
Elm is a domain-specific programming language for declaratively creating web browser-based graphical user interfaces. Elm is purely functional, and is developed with emphasis on usability, performance, and robustness. It advertises "no runtime exceptions in practice", made possible by the Elm compiler's static type checking. History Elm was initially designed by Evan Czaplicki as his thesis in 2012. The first release of Elm came with many examples and an online editor that made it easy to try out in a web browser. Evan joined Prezi in 2013 to work on Elm, and in 2016 moved to NoRedInk as an Open Source Engineer, also starting the Elm Software Foundation. The initial implementation of the Elm compiler targets HTML, CSS, and JavaScript. The set of core tools has continued to expand, now including a REPL, package manager, time-travelling debugger, and installers for macOS and Windows. Elm also has an ecosystem ocommunity created librariesanEllie an advanced online editor tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |