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Google Code Search
Google Code Search was a free beta product from Google which debuted in Google Labs on October 5, 2006, allowing web users to search for open-source code on the Internet. Features included the ability to search using operators, namely , , , and . The code available for searching was in various formats including tar.gz, .tar.bz2, .tar, and .zip, CVS, Subversion, git and Mercurial repositories. Google Code Search covered many open-source projects, and as such is different from the "Code Search for Google Open source projects" that was released afterwards. Regular expression engine The site allowed the use of regular expressions in queries, which at that time was not offered by any other search engine for code. This makes it resemble grep, but over the world's public code. The methodology employed, sometimes called trigram search, combines a trigram index with a custom-built, denial-of-service resistant regular expression engine. In March 2010, the code of RE2, the regular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Search Engine
A search engine is a software system designed to carry out web searches. They search the World Wide Web in a systematic way for particular information specified in a textual web search query. The search results are generally presented in a line of results, often referred to as search engine results pages (SERPs). When a user enters a query into a search engine, the engine scans its index of web pages to find those that are relevant to the user's query. The results are then ranked by relevancy and displayed to the user. The information may be a mix of links to web pages, images, videos, infographics, articles, research papers, and other types of files. Some search engines also mine data available in databases or open directories. Unlike web directories and social bookmarking sites, which are maintained by human editors, search engines also maintain real-time information by running an algorithm on a web crawler. Any internet-based content that can't be indexed and searched ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RE2 (software)
RE2 is a software library for regular expressions via a finite-state machine using automata theory, in contrast to almost all other regular expression libraries, which use backtracking implementations. It provides a C++ interface. RE2 was implemented and is used by Google. Comparison to PCRE RE2 generally compares to Perl Compatible Regular Expressions (PCRE) in performance. For certain regular expression operators like , (logical disjunction or boolean "or") it exceeds PCRE. On the other hand, RE2 does not support back-references and cannot implement those efficiently. It is also slightly slower than PCRE for parenthetic capturing operations. PCRE can use a large recursive stack with corresponding high memory use and have exponential runtime on certain patterns. In contrast, RE2 uses a fixed stack and guarantees that run-time increases linearly (not exponentially) with the size of the input. The maximum memory allocated with RE2 is configurable. RE2 has a slightly smalle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Code Search Engines
In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is an invention of language, which enabled a person, through speech, to communicate what they thought, saw, heard, or felt to others. But speech limits the range of communication to the distance a voice can carry and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time. The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or/and Spanish. One reason for coding is to enab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromium (web Browser)
Chromium is a free and open-source web browser project, mainly developed and maintained by Google. This codebase provides the vast majority of code for the Google Chrome browser, which is proprietary software and has some additional features. The Chromium codebase is widely used. Microsoft Edge, Samsung Internet, Opera, and many other browsers are based on the Chromium code. Moreover, significant portions of the code are used by several app frameworks. Google does not provide an official stable version of the Chromium browser, but does provide official API keys for some features, such as speech to text and translation. Licensing Chromium is a free and open-source software project. The Google-authored portion is shared under the 3-clause BSD license. Third party dependencies are subject to a variety of licenses, including MIT, LGPL, Ms-PL, and an MPL/GPL/ LGPL tri-license. This licensing permits any party to build the codebase and share the resulting browser executa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenGrok
OpenGrok is a source code search and cross-reference engine. It helps programmers to search, cross-reference, and navigate source code trees to aid code comprehension. It can understand various program file formats and version control histories like Monotone, SCCS, RCS, CVS, Subversion, Mercurial, Git, Clearcase, Perforce, and Bazaar. The name comes from the term ''grok'', a jargon term used in computing to mean "profoundly understand." OpenGrok is being developed mainly by the community with the help of a few engineers from Oracle Corporation (which absorbed Sun Microsystems). OpenGrok is released under the terms of the Common Development and Distribution License (CDDL). It is mainly written in Java, with some tooling done in Python. It relies on the analysis done by Ctags. There is an official Docker image available. Features OpenGrok supports: * Full text Search * Definition Search * Identifier Search * Path search * History Search * Shows matching lines * Hierarchica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merobase
Merobase is a software search engine that allows developers to find, share and reuse software components from the Internet. The engine harvests software components from a large variety of sources, including Apache, SourceForge, and Java.net. It finished its beta phase and went live in March 2007. A unique feature of merobase compared to other code search engines is its ability to support interface-driven searches – that is, searches based on the abstract interface that a component offers rather than on the text in its source code. This allows merobase to support searches for binary components (e.g., Java bytecode, CLI assemblies) and web services, as well as source code, and significantly enhances its precision. Merobase Plugins are available for Mozilla Firefox and Internet Explorer Internet Explorer (formerly Microsoft Internet Explorer and Windows Internet Explorer, commonly abbreviated IE or MSIE) is a series of graphical web browsers developed by Microsoft whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koders
Koders was a search engine for open source code. It enabled software developers to easily search and browse source code in thousands of projects posted at hundreds of open source repositories. On April 28, 2008, it was announced that Black Duck Software would acquire the Koders assets and technologies although the Koders website will remain as a free resource. On May 19, 2009, Black Duck Software announced that projects from the Microsoft CodePlex open source project hosting site will now be fed automatically into Black Duck’s open source KnowledgeBase repository. The projects also will be searchable through Black Duck’s Koders.com. Koders announced on September 9, 2009 that their search engine now exceed 2.4 billion lines of code; a 210% increase since April 2008. Black Duck Software announced on October 25, 2012 the merge of Koders with Ohloh Code. Plug-ins In addition to their web-based search engine, Koders provided a plug-in for the IDE Eclipse and an add-in for Mic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Hub
Black Duck Open Hub, formerly Ohloh, is a website which provides a web services suite and online community platform that aims to index the open-source software development community. It was founded by former Microsoft managers Jason Allen and Scott Collison in 2004 and joined by the developer Robin Luckey. , the site lists 669,601 open-source projects, 681,345 source control repositories, 3,848,524 contributors and 31,688,426,179 lines of code. In 2017, Black Duck Software (the company running the site) was acquired by Synopsys for $565 million. History Ohloh is a website that provides a web services suite and online community platform that aims to index the open-source software development community. It was founded by former Microsoft managers Jason Allen and Scott Collison in 2004 and joined by the developer Robin Luckey. , the site lists 669,601 open-source projects, 681,345 source control repositories, 3,848,524 contributors and 31,688,426,179 lines of code. On 28 May 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krugle
Krugle delivers continuously updated, federated access to all of the code and technical information in the enterprise. Krugle search helps an organization pinpoint critical code patterns and application issues - immediately and at massive scale. Krugle finished its beta Beta (, ; uppercase , lowercase , or cursive ; grc, βῆτα, bÄ“Ì‚ta or ell, βήτα, vÃta) is the second letter of the Greek alphabet. In the system of Greek numerals, it has a value of 2. In Modern Greek, it represents the voiced labiod ... phase and went live on June 14th, 2006. On February 17, 2009, it was announced that Aragon Consulting Group would acquire the Krugle assets and focus on the enterprise. References External links * {{Official website Wired Article about Krugle(February 2006) (July 2006) Code search engines Internet search engines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russ Cox
Russ is a masculine given name, often a short form of Russell, and also a surname. People Given name or nickname * Russ Abbot (born 1947), British musician, comedian and actor * Russ Adams (born 1980), American retired baseball player * Russ Barenberg (born 1950), American bluegrass musician * Russ Conway (1925–2000), stage name of Trevor Stanford, English popular music pianist * Russ Feingold, American politician * Russ Freeman (pianist) (1926–2002), American bebop jazz pianist and composer * Russ Freeman (guitarist) (born 1960), American jazz fusion guitarist, composer and bandleader * Russ Granik, longtime Deputy Commissioner of the National Basketball Association * Russ Grimm (born 1959), American retired football player * Russ Hodge (born 1939), American decathlete, world record holder (1966–1967) * Russ Howard (born 1956), Canadian curler * Russ Kingston, American actor, editor and filmmaker * Russ Kun (born 1975), President of Nauru (2022–) * Russ Letlow (1913â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HTTP 404
In computer network communications, the HTTP 404, 404 not found, 404, 404 error, page not found or file not found error message is a hypertext transfer protocol (HTTP) standard response code, to indicate that the browser was able to communicate with a given server, but the server could not find what was requested. The error may also be used when a server does not wish to disclose whether it has the requested information. The website hosting server will typically generate a "404 Not Found" web page when a user attempts to follow a broken or dead link; hence the 404 error is one of the most recognizable errors encountered on the World Wide Web. Overview When communicating via HTTP, a server is required to respond to a request, such as a web browser request for a web page, with a numeric response code and an optional, mandatory, or disallowed (based upon the status code) message. In code 404, the first digit indicates a client error, such as a mistyped Uniform Resource L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ReDoS
A regular expression denial of service (ReDoS) is an algorithmic complexity attack that produces a denial-of-service by providing a regular expression and/or an input that takes a long time to evaluate. The attack exploits the fact that many regular expression implementations have super-linear worst-case complexity; on certain regex-input pairs, the time taken can grow polynomially or exponentially in relation to the input size. An attacker can thus cause a program to spend substantial time by providing a specially crafted regular expression and/or input. The program will then slow down or become unresponsive. Description Regular expression ("regex") matching can be done by building a finite-state automaton. Regex can be easily converted to nondeterministic automata (NFAs), in which for each state and input symbol, there may be several possible next states. After building the automaton, several possibilities exist: * the engine may convert it to a deterministic finite-state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
