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Twisted (software)
Twisted is an event-driven programming, event-driven computer network programming, network programming software framework, framework written in Python (programming language), Python and licensed under the MIT License. Twisted projects variously support Transmission Control Protocol, TCP, User Datagram Protocol, UDP, Transport Layer Security, SSL/TLS, IP multicast, Unix domain Unix domain socket, sockets, many protocols (including HTTP, Extensible Messaging and Presence Protocol, XMPP, Network News Transfer Protocol, NNTP, Internet Message Access Protocol, IMAP, Secure Shell, SSH, IRC, File Transfer Protocol, FTP, and others), and much more. Twisted is based on the event-driven programming paradigm, which means that users of Twisted write short callback (computer science), callbacks which are called by the framework. Core ideas Separation of protocols and transports Twisted is designed for complete separation between logical protocols (usually relying on stream-based connection s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyph Lefkowitz
Glyph Lefkowitz is an American open-source software programmer and creator of the Twisted (software), Twisted network programming framework for Python (programming language), Python. His work on Asynchrony (computer programming), asynchronous programming techniques influenced the core Python language, as well as the JavaScript Futures and promises, Promises ecosystem, through Dojo Toolkit, Dojo and MochiKit, Mochikit. He is a frequent speaker at developer conferences and was elected a fellow of the Python Software Foundation (PSF) in 2009. Between 2009 and 2013, he was one of the primary contributors of Apple Inc., Apple's Calendar and Contacts Server (CCS) software. In 2017, the PSF awarded Lefkowitz their Community Service Award for his influence on the direction of the Python language and community, including his role in pioneering asynchronous programming models. References External links Deciphering Glyph- Lefkowitz's blog Twisted Matrix Labs- Home of the Twisted pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callback (computer Science)
In computer programming, a callback or callback function is any reference to executable code that is passed as an argument to another piece of code; that code is expected to ''call back'' (execute) the callback function as part of its job. This execution may be immediate as in a synchronous callback, or it might happen at a later point in time as in an asynchronous callback. Programming languages support callbacks in different ways, often implementing them with subroutines, lambda expressions, blocks, or function pointers. Design There are two types of callbacks, differing in how they control data flow at runtime: ''blocking callbacks'' (also known as ''synchronous callbacks'' or just ''callbacks'') and ''deferred callbacks'' (also known as ''asynchronous callbacks''). While blocking callbacks are invoked before a function returns (as in the C example below), deferred callbacks may be invoked after a function returns. Deferred callbacks are often used in the context of I/O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Canada
Air Canada is the flag carrier and the largest airline of Canada by the size and passengers carried. Air Canada maintains its headquarters in the borough of Saint-Laurent, Montreal, Quebec. The airline, founded in 1937, provides scheduled and charter air transport for passengers and cargo to 222 destinations worldwide. It is a founding member of the Star Alliance. Air Canada's major hubs are at Montréal–Trudeau International Airport (YUL), Toronto Pearson International Airport (YYZ), Calgary International Airport (YYC), and Vancouver International Airport (YVR). The airline's regional service is Air Canada Express. Canada's national airline originated from the Canadian federal government's 1936 creation of Trans-Canada Air Lines ( TCA), which began operating its first transcontinental flight routes in 1938. In 1965, TCA was renamed Air Canada following government approval. After the deregulation of the Canadian airline market in the 1980s, the airline was privatized in 198 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ITA Software
ITA Software is a travel industry software division of Google, formerly an independent company, in Cambridge, Massachusetts. The company was founded by Jeremy Wertheimer, a computer scientist from the MIT Artificial Intelligence Laboratory and Cooper Union, with his partner Richard Aiken in 1996. On July 1, 2010, ITA agreed to be acquired by Google. On April 8, 2011, the US Department of Justice approved the buyout. As part of the agreement, Google was required to license ITA software to other websites for five years. History ITA's first product was an airfare search and pricing system called QPX. This system has been and is used by travel companies such as Bing Travel, CheapTickets, Kayak.com, and Orbitz, and by airlines such as Alitalia, American, ANA, Cape Air, Delta Air Lines, United Airlines, US Airways, and Virgin Atlantic. ITA also hosts its own airfare search website based on QPX, called "Matrix", although it is not possible to buy tickets from it. ITA was known for usi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BuildBot
Buildbot is a software development continuous integration tool which automates the compile or test cycle required to validate changes to the project code base. It began as a light-weight alternative to the Mozilla project's Tinderbox, and is now used by Python, WebKit, LLVM, Blender, ReactOS, and many other projects. Implementation Buildbot is written in Python on top of the Twisted libraries. SCM support , in version 2.10.1, Buildbot supports SCM integration with CVS, Subversion, Darcs, Mercurial, Bazaar, Git, Monotone, Repo/Gerrit, Perforce, and BitKeeper. See also * Build automation * Comparison of continuous integration software This is a compendium of continuous integration software that supports a software engineering practice, continuous integration, in which developers' changes are immediately tested and reported when they are added to the mainline code base. The com ... References External links * Continuous integration with Buildbot(IBM developer bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphical User Interface
The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, instead of text-based UIs, typed command labels or text navigation. GUIs were introduced in reaction to the perceived steep learning curve of CLIs ( command-line interfaces), which require commands to be typed on a computer keyboard. The actions in a GUI are usually performed through direct manipulation of the graphical elements. Beyond computers, GUIs are used in many handheld mobile devices such as MP3 players, portable media players, gaming devices, smartphones and smaller household, office and industrial controls. The term ''GUI'' tends not to be applied to other lower-display resolution types of interfaces, such as video games (where HUD (''head-up display'') is preferred), or not including flat screens like volumetric displays because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PyObjC
PyObjC is a bidirectional bridge between the Python and Objective-C programming languages, allowing programmers to use and extend existing Objective-C libraries, such as Apple's Cocoa framework, using Python. PyObjC is used to develop macOS applications in pure Python. There is also limited support for GNUstep, an open source, cross-platform implementation of Cocoa. For Python programmers The most important usage of PyObjC is enabling programmers to create GUI applications using Cocoa libraries in pure Python. Moreover, as an effect of Objective-C's close relationship with the C programming language (it is a pure superset), developers are also able to incorporate any C-based API by wrapping it with an Objective-C wrapper and then using the wrapped code over the PyObjC bridge. Using Objective-C++, the same can be done with C%2B%2B libraries. For Objective-C programmers Cocoa developers may also benefit, as tasks written in Python generally take fewer lines than the Objective-C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cocoa (API)
Cocoa is Apple's native object-oriented application programming interface (API) for its desktop operating system macOS. Cocoa consists of the Foundation Kit, Application Kit, and Core Data frameworks, as included by the Cocoa.h header file, and the libraries and frameworks included by those, such as the C standard library and the Objective-C runtime.Mac Technology Overview: OS X Frameworks Developer.apple.com. Retrieved on September 18, 2013. Cocoa applications are typically developed using the development tools provided by Apple, specifically (formerly [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qt (framework)
Qt (pronounced "cute") is cross-platform software for creating graphical user interfaces as well as cross-platform applications that run on various software and hardware platforms such as Linux, Windows, macOS, Android or embedded systems with little or no change in the underlying codebase while still being a native application with native capabilities and speed. Qt is currently being developed by The Qt Company, a publicly listed company, and the Qt Project under open-source governance, involving individual developers and organizations working to advance Qt. Qt is available under both commercial licenses and open-source GPL 2.0, GPL 3.0, and LGPL 3.0 licenses. Purposes and abilities Qt is used for developing graphical user interfaces (GUIs) and multi-platform applications that run on all major desktop platforms and most mobile or embedded platforms. Most GUI programs created with Qt have a native-looking interface, in which case Qt is classified as a ''widget toolkit''. No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GTK+
GTK (formerly GIMP ToolKit and GTK+) is a free and open-source cross-platform widget toolkit for creating graphical user interfaces (GUIs). It is licensed under the terms of the GNU Lesser General Public License, allowing both free and proprietary software to use it. It is one of the most popular toolkits for the Wayland and X11 windowing systems. The GTK team releases new versions on a regular basis. GTK 4 and GTK 3 are maintained, while GTK 2 is end-of-life. Software architecture The GTK library contains a set of graphical control elements ( widgets); version 3.22.16 contains 186 active and 36 deprecated widgets. GTK is an object-oriented widget toolkit written in the programming language C; it uses GObject, that is the GLib object system, for the object orientation. While GTK is mainly for windowing systems based on X11 and Wayland, it works on other platforms, including Microsoft Windows (interfaced with the Windows API), and macOS (interfaced with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thread (computing)
In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system. The implementation of threads and processes differs between operating systems. In Modern Operating Systems, Tanenbaum shows that many distinct models of process organization are possible.TANENBAUM, Andrew S. Modern Operating Systems. 1992. Prentice-Hall International Editions, ISBN 0-13-595752-4. In many cases, a thread is a component of a process. The multiple threads of a given process may be executed concurrently (via multithreading capabilities), sharing resources such as memory, while different processes do not share these resources. In particular, the threads of a process share its executable code and the values of its dynamically allocated variables and non- thread-local global variables at any given time. History Threads made an early appearance under the name of "tasks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IP Address
An Internet Protocol address (IP address) is a numerical label such as that is connected to a computer network that uses the Internet Protocol for communication.. Updated by . An IP address serves two main functions: network interface identification and location addressing. Internet Protocol version 4 (IPv4) defines an IP address as a 32-bit number. However, because of the growth of the Internet and the depletion of available IPv4 addresses, a new version of IP (IPv6), using 128 bits for the IP address, was standardized in 1998. IPv6 deployment has been ongoing since the mid-2000s. IP addresses are written and displayed in human-readable notations, such as in IPv4, and in IPv6. The size of the routing prefix of the address is designated in CIDR notation by suffixing the address with the number of significant bits, e.g., , which is equivalent to the historically used subnet mask . The IP address space is managed globally by the Internet Assigned Numbers Authority (IA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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