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Placeholder
Placeholder may refer to: Language * Placeholder name, a term or terms referring to something or somebody whose name is not known or, in that particular context, is not significant or relevant. * Filler text, text generated to fill space or provide unremarkable and/or standardised text. * Lorem ipsum, a standard Latin text most commonly used to demonstrate a font, typography or layout. Mathematics and computer science * Free variable, a symbol subsequently replaced by a value or string. * Interpoled variable of a ''string interpolation'' process. * Metasyntactic variable, a placeholder name (see above) as used in computer science. * Format placeholder, used in computing to format strings within print functions (printf). Other uses * Line stander, a person standing in a queue for another. * Placeholder (politics), a person temporarily appointed to an office that would otherwise remain vacant. See also * Filler (other) In general, a filler is something that is used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placeholder Name
Placeholder names are words that can refer to things or people whose names do not exist, are tip of the tongue, temporarily forgotten, are not relevant to the salient point at hand, are to avoid stigmatization, are unknowable/unpredictable in the context in which they are being discussed, or are otherwise de-emphasized whenever the speaker or writer is unable to, or chooses not to, specify precisely. Placeholder names for people are often list of terms referring to an average person, terms referring to an average person or a predicted persona (user experience), persona of a typical user. Linguistic role These Free variables and bound variables, placeholders typically function grammar, grammatically as nouns and can be used for people (e.g. ''John Doe, John Doe, Jane Doe''), objects (e.g. ''Widget (economics), widget''), locations ("Main Street"), or places (e.g. ''Anytown, USA''). They share a property with pronouns, because their reference, referents must be supplied by co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metasyntactic Variable
A metasyntactic variable is a specific word or set of words identified as a placeholder in computer science and specifically computer programming. These words are commonly found in source code and are intended to be modified or substituted before real-world usage. The words foo and bar are good examples as they are used in over 330 Internet Engineering Task Force Requests for Comments, the documents which define foundational internet technologies like HTTP (web), TCP/IP, and email protocols. By mathematical analogy, a metasyntactic variable is a word that is a variable for other words, just as in algebra letters are used as variables for numbers. Metasyntactic variables are used to name entities such as variables, functions, and commands whose exact identity is unimportant and serve only to demonstrate a concept, which is useful for teaching programming. Common metasyntactic variables Due to English being the foundation-language, or lingua franca, of most computer programming la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Placeholder (politics)
In politics, a placeholder is an official appointed temporarily to a position, with the understanding that they will not seek office in their own right. The situation often occurs in cases where a United States senator dies in office or leaves before the expiration of their term. In most states, governors have the power to appoint a replacement temporarily, until a special election can be held. Governors interested in seeking the office may appoint themselves to the position; however, this may be seen by voters in a negative light as self-dealing and creating an undue advantage, and it may backfire leading to the new senator's defeat. To avoid this, the governor may instead select an aide to fill the slot for a few months, with the understanding that the appointee does not seek a full term. After the resignation of Senator Mel Martinez of Florida, Florida Governor Charlie Crist appointed his chief of staff George LeMieux to the vacant Senate seat, which Crist ultimately ran for. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Interpolation
In computer programming, string interpolation (or variable interpolation, variable substitution, or variable expansion) is the process of evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values. It is a form of simple template processing or, in formal terms, a form of quasi-quotation (or logic substitution interpretation). The placeholder may be a variable name, or in some languages an arbitrary expression, in either case evaluated in the current context. String interpolation is an alternative to building string via concatenation, which requires repeated quoting and unquoting; or substituting into a printf format string, where the variable is far from where it is used. Compare: apples = 4 print("I have $ apples.") # string interpolation print("I have " + apples + " apples.") # string concatenation print("I have %s apples.", apples) # format string Two types of literal expression ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Line Stander
A line stander, queue stander, line sitter or queue professional is a person who takes a position in a queue in place of another, often for payment. The stander may queue to buy a physical object, such as a games console, for their client, or may hold the space for that person, if queueing for a service. Practice Line sitting is often a paid endeavor, with companies recruiting people, sometimes homeless people, to sit in lines for a price. In some circumstances, people can make sufficient money to line sit professionally. In rare cases, people also choose to sit in line for non-monetary purposes, e.g. for media attention at major events, Greg Packer is an example of this. There are also social media personalities who would queue up for the latest consumer electronics and then destroy them in front of the queuing crowd for notoriety or content. " Smash Our Stuff" is the name a group of Canadians go by, who have in the past been paid to smash a brand new iPod Nano out of the box. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lorem Ipsum
In publishing and graphic design, ''Lorem ipsum'' is a placeholder text commonly used to demonstrate the visual form of a document or a typeface without relying on meaningful content. ''Lorem ipsum'' may be used as a placeholder before final copy Copy may refer to: *Copying or the product of copying (including the plural "copies"); the duplication of information or an artifact **Cut, copy and paste, a method of reproducing text or other data in computing **File copying **Photocopying, a pr ... is available. It is also used to temporarily replace text in a process called greeking, which allows designers to consider the form of a webpage or publication, without the meaning of the text influencing the design. ''Lorem ipsum'' is typically a corrupted version of , a 1st-century BC text by the Roman Republic, Roman statesman and philosopher Cicero, with words altered, added, and removed to make it nonsensical and improper Latin. Versions of the ''Lorem ipsum'' text have been used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filler (other)
In general, a filler is something that is used to fill gaps. Specialized meanings include: Materials * Filler (animal food), dietary fiber and other ingredients added to pet foods to provide bulk * Filler (materials), particles added to a matrix material, usually to improve its properties * Filler (packaging), a machine designed to fill packaging, usually occurs in food packaging * Filler metal, metal added in the making of a joint through welding, brazing, or soldering * Grain filler, a product that is used to achieve a smooth-textured wood finish * Injectable filler, a soft tissue filler injected into the skin to help fill in facial wrinkles * Star filler, a plastic insert in computer cables which separates wires Media and entertainment * Filler (media), in television and other media, material that exists outside the story arc to pad out other material * "Filler", song by hardcore punk band Minor Threat, from their debut E.P. Other uses * Filler (linguistics), a sound spoken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spacer (other)
Spacer may refer to: Arts and entertainment * "Spacer", a song by Sheila and B. Devotion from the 1980 album '' King of the World'' * ''Spacer'' (album), 2011 jazz album by Jason Adasiewicz * Spacers, a fictional sociocultural group in Isaac Asimov's ''Robot'' series of novels and short stories Science and technology Biology and medicine * Asthma spacer, medical equipment * Orthodontic spacer * Spacer DNA, in genetics * Spacer in joint replacement Other uses in science and technology * Spacer, an element in HTML web design * Spacers and standoffs, unthreaded pieces of rigid tubing, often used in electronic equipment * Rebar spacer, in concrete construction Oil and gas industry * Spacer, a viscous fluid used to remove drilling fluids ahead of cement slurry. The spacer is made up with specific fluid attributes, such as viscosity and density that are designed to prohibit the interaction between the mud and cement slurry. Other uses * Spacer (self-storage), an Australian onl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filler Text
Filler text (also placeholder text or dummy text) is text that shares some characteristics of a real written text, but is random or otherwise generated. It may be used to display a sample of fonts, generate text for testing, or to spoof an e-mail spam filter. The process of using filler text is sometimes called ''greeking,'' although the text itself may be nonsense, or largely Latin, as in Lorem ipsum. Asdf ASDF is the sequence of letters that appear on the first four keys on the home row of a QWERTY or QWERTZ keyboard. They are often used as a sample or test case or as random, meaningless nonsense. It is also a common learning tool for keyboard classes, since all four keys are located on Home row. Etaoin shrdlu "Etaoin shrdlu" is the approximate order of frequency of the twelve most commonly used letters in the English language, best known as a nonsense phrase that sometimes appeared in print in the days of "hot type" publishing due to a custom of Linotype machine operator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Variables And Bound Variables
In mathematics, and in other disciplines involving formal languages, including mathematical logic and computer science, a free variable is a notation (symbol) that specifies places in an expression where substitution may take place and is not a parameter of this or any container expression. Some older books use the terms real variable and apparent variable for free variable and bound variable, respectively. The idea is related to a placeholder (a symbol that will later be replaced by some value), or a wildcard character that stands for an unspecified symbol. In computer programming, the term free variable refers to variables used in a function that are neither local variables nor parameters of that function. The term non-local variable is often a synonym in this context. A bound variable, in contrast, is a variable that has been ''bound'' to a specific value or range of values in the domain of discourse or universe. This may be achieved through the use of logical quantifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printf Format String
The printf format string is a control parameter used by a class of functions in the input/output libraries of C and many other programming languages. The string is written in a simple template language: characters are usually copied literally into the function's output, but format specifiers, which start with a character, indicate the location and method to translate a piece of data (such as a number) to characters. "printf" is the name of one of the main C output functions, and stands for "''print f''ormatted". printf format strings are complementary to scanf format strings, which provide formatted input (lexing aka. parsing). In both cases these provide simple functionality and fixed format compared to more sophisticated and flexible template engines or lexers/parsers, but are sufficient for many purposes. Many languages other than C copy the printf format string syntax closely or exactly in their own I/O functions. Mismatches between the format specifiers and type of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stand-in
A stand-in for film and television is a person who substitutes for the actor before filming, for technical purposes such as lighting and camera setup. Stand-ins are helpful in the initial processes of film and television production. Stand-ins allow the director of photography to light the set and the camera department to light and focus scenes while the actors are absent. The director will often ask stand-ins to deliver the scene dialogue ("lines") and walk through ("blocking") the scenes to be filmed. Stand-ins are distinguished from doubles, who replace actors ''on camera'' from behind, in makeup, or during dangerous stunts. Stand-ins do not appear on camera. However, on some productions the jobs of stand-in and double may be done by the same person. In rare cases, a stand-in will appear on screen, sometimes as an in-joke. For instance, the actress who pretends to be Ann Darrow in the stage show during the final act of ''King Kong'' (2005) is played by Naomi Watts' stand-in, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
