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Concatenate
In formal language theory and computer programming, string concatenation is the operation of joining character strings end-to-end. For example, the concatenation of "snow" and "ball" is "snowball". In certain formalizations of concatenation theory, also called string theory, string concatenation is a primitive notion. Syntax In many programming languages, string concatenation is a binary infix operator, and in some it is written without an operator. This is implemented in different ways: * Overloading the plus sign + Example from C#: "Hello, " + "World" has the value "Hello, World". * Dedicated operator, such as . in PHP, & in Visual Basic, and , , in SQL. This has the advantage over reusing + that it allows implicit type conversion to string. * string literal concatenation, which means that adjacent strings are concatenated without any operator. Example from C: "Hello, " "World" has the value "Hello, World". In many scientific publications or standards the conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
String Literal Concatenation
string literal or anonymous string is a literal for a string value in the source code of a computer program. Modern programming languages commonly use a quoted sequence of characters, formally "bracketed delimiters", as in x = "foo", where , "foo" is a string literal with value foo. Methods such as escape sequences can be used to avoid the problem of delimiter collision (issues with brackets) and allow the delimiters to be embedded in a string. There are many alternate notations for specifying string literals especially in complicated cases. The exact notation depends on the programming language in question. Nevertheless, there are general guidelines that most modern programming languages follow. Syntax Bracketed delimiters Most modern programming languages use bracket delimiters (also balanced delimiters) to specify string literals. Double quotations are the most common quoting delimiters used: "Hi There!" An empty string is literally written by a pair of quotes with n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formal Language
In logic, mathematics, computer science, and linguistics, a formal language is a set of strings whose symbols are taken from a set called "alphabet". The alphabet of a formal language consists of symbols that concatenate into strings (also called "words"). Words that belong to a particular formal language are sometimes called ''well-formed words''. A formal language is often defined by means of a formal grammar such as a regular grammar or context-free grammar. In computer science, formal languages are used, among others, as the basis for defining the grammar of programming languages and formalized versions of subsets of natural languages, in which the words of the language represent concepts that are associated with meanings or semantics. In computational complexity theory, decision problems are typically defined as formal languages, and complexity classes are defined as the sets of the formal languages that can be parsed by machines with limited computational power. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplication
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division (mathematics), division. The result of a multiplication operation is called a ''Product (mathematics), product''. Multiplication is often denoted by the cross symbol, , by the mid-line dot operator, , by juxtaposition, or, in programming languages, by an asterisk, . The multiplication of whole numbers may be thought of as repeated addition; that is, the multiplication of two numbers is equivalent to adding as many copies of one of them, the ''multiplicand'', as the quantity of the other one, the ''multiplier''; both numbers can be referred to as ''factors''. This is to be distinguished from term (arithmetic), ''terms'', which are added. :a\times b = \underbrace_ . Whether the first factor is the multiplier or the multiplicand may be ambiguous or depend upon context. For example, the expression 3 \times 4 , can be phrased as "3 ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20241229 Using Concatenate Function In Spreadsheet To Create SVG Code - Demo
41 may refer to: * 41 (number) * one of the years 41 BC, AD 41, 1941, 2041 Art and entertainment * 41 (film), ''41'' (film), a 2007 documentary about Nicholas O'Neill, the youngest victim of the Station nightclub fire * ''41'', an Australian award-winning science fiction time travel film about a time loop, by Glenn Triggs * ''41'', a 2012 documentary about President George H. W. Bush. * 41 (song), "#41" (song), a song by the Dave Matthews Band * ''Survivor 41'', the 41st installment of CBS's reality program ''Survivor'' * "Forty One", a song by Karma to Burn from the album ''Appalachian Incantation'', 2010 People * George H. W. Bush, or "Bush 41" (to distinguish him from his son, George W. Bush), 41st president of the United States * Nick "41" MacLaren, member of the New Zealand hip hop duo Frontline (band), Frontline * 41 (group), a Brooklyn drill trio Others * HP-41C, a series of calculators made by Hewlett-Packard ** FOCAL (Hewlett-Packard) (Forty-one calculator language), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tellme
Tellme Networks, Inc. was an American company founded in 1999 by Mike McCue and Angus Davis, which specialized in telephone-based applications. Its headquarters were in Mountain View, California. Tellme Networks was acquired by Microsoft on March 14, 2007, for approximately $800 million; the deal closed in late April 2007. In 2006, Tellme's phone network processed more than 2 billion unique calls. Tellme established an information number which provided time-of-day announcements, weather forecasts, brief news and sports summaries, business searches, stock market quotations, driving directions, and similar amenities. Operating by voice prompts and speech-recognition software, it was set up in 2000 as a loss-leader service to demonstrate the Tellme functionality to U.S. consumers. The voice of the Tellme service is Darby Bailey. In early 2012, Microsoft divested itself of Tellme Networks' interactive voice response (IVR) service and the majority of its employees to 24/7 Inc. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moviefone
Moviefone is an American-based moving pictures listing and information service. Moviegoers can obtain local showtimes, cinema information, film reviews, and advance tickets, as well as TV content and a comprehensive search tool that allows users to find theaters, channels, and streaming services offering movies and television shows. The service is owned by Born in Cleveland LLC, Cleveland O'Neal III's holding company. O'Neal is creator and producer of '' Made in Hollywood'' syndicated daytime entertainment show. History In 1987, in Manhattan Beach, CA, Doug Hoitenga conceived the idea and business model for moviefone, and shortly thereafter compiled a founding team. In 1989, Doug Hoitenga, along with Russ Leatherman, Rob Gukeisen, Andrew Jarecki, Pat Cardamone, and Adam Slutsky launched the interactive telephone service, with initial service in Los Angeles and New York City. Leatherman provided the voice of "Mr. Moviefone" for the automated phone service. After gaining popularit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Mail
A voicemail system (also known as voice message or voice bank) is a computer-based system that allows callers to leave a Voice recording, recorded message when the recipient has been unable (or unwilling) to answer the Telephone, phone. Calls may be directed to voicemail manually or automatically. The caller is prompted to leave a message that the recipient can retrieve at a later time. Voicemail can be used for personal calls, but more complex systems exist for companies and services to handle the volume of customer requests. The term is also used more broadly to denote ''any'' system of conveying stored telecommunications voice messages, including using older technology like answering machine, answering machines. Features Voicemail systems are designed to convey a caller's recorded audio message to a recipient. To do so they contain a user interface to select, play, and manage messages; a delivery method to either play or otherwise deliver the message; and a notification abi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speaking Clock
A speaking clock or talking clock is a live or recorded human voice service, usually accessed by telephone, that gives the correct time. The first telephone speaking clock service was introduced in France, in association with the Paris Observatory, on 14 February 1933. The format of the service is similar to that of radio time signal services. At set intervals (''e.g.'' ten seconds) a voice announces (for example) "At the third stroke, the time will be twelve forty-six and ten seconds……", with three beeps following. Some countries have sponsored time announcements and include the sponsor's name in the message. List by country Australia In Australia, the number 1194 was the speaking clock in all areas. The service started in 1953 by the Post Master General's Department, originally to access the talking clock on a rotary dial phone, callers would dial "B074", during the transition from a rotary dial to a DTMF based phone system, the talking clock number changed from "B074" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empty Set
In mathematics, the empty set or void set is the unique Set (mathematics), set having no Element (mathematics), elements; its size or cardinality (count of elements in a set) is 0, zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set. Any set other than the empty set is called ''non-empty''. In some textbooks and popularizations, the empty set is referred to as the "null set". However, null set is a distinct notion within the context of measure theory, in which it describes a set of measure zero (which is not necessarily empty). Notation Common notations for the empty set include "", "\emptyset", and "∅". The latter two symbols were introduced by the Bourbaki group (specifically André Weil) in 1939, inspired by the letter Ø () in the Danish orthography, Danish and Norwegian orthography, Norwegian a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributive Property
In mathematics, the distributive property of binary operations is a generalization of the distributive law, which asserts that the equality x \cdot (y + z) = x \cdot y + x \cdot z is always true in elementary algebra. For example, in elementary arithmetic, one has 2 \cdot (1 + 3) = (2 \cdot 1) + (2 \cdot 3). Therefore, one would say that multiplication ''distributes'' over addition. This basic property of numbers is part of the definition of most algebraic structures that have two operations called addition and multiplication, such as complex numbers, polynomials, Matrix (mathematics), matrices, Ring (mathematics), rings, and Field (mathematics), fields. It is also encountered in Boolean algebra and mathematical logic, where each of the logical and (denoted \,\land\,) and the logical or (denoted \,\lor\,) distributes over the other. Definition Given a Set (mathematics), set S and two binary operators \,*\, and \,+\, on S, *the operation \,*\, is over (or with respect to) \,+ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semiring
In abstract algebra, a semiring is an algebraic structure. Semirings are a generalization of rings, dropping the requirement that each element must have an additive inverse. At the same time, semirings are a generalization of bounded distributive lattices. The smallest semiring that is not a ring is the two-element Boolean algebra, for instance with logical disjunction \lor as addition. A motivating example that is neither a ring nor a lattice is the set of natural numbers \N (including zero) under ordinary addition and multiplication. Semirings are abundant because a suitable multiplication operation arises as the function composition of endomorphisms over any commutative monoid. Terminology Some authors define semirings without the requirement for there to be a 0 or 1. This makes the analogy between ring and on the one hand and and on the other hand work more smoothly. These authors often use rig for the concept defined here. This originated as a joke, suggestin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternation (formal Language Theory)
In formal language theory and pattern matching, alternation is the union of two sets of strings, or equivalently the logical disjunction of two patterns describing sets of strings. Regular languages are closed under alternation, meaning that the alternation of two regular languages is again regular. In implementations of regular expressions, alternation is often expressed with a vertical bar connecting the expressions for the two languages whose union is to be matched, while in more theoretical studies the plus sign may instead be used for this purpose. The ability to construct finite automata for unions of two regular languages that are themselves defined by finite automata is central to the equivalence between regular languages defined by automata and by regular expressions. Other classes of languages that are closed under alternation include context-free languages and recursive languages. The vertical bar notation for alternation is used in the SNOBOL language and some other la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
