Placeholder
Encyclopedia
Placeholder may refer to:
In language:
In mathematics and computer science:
In politics:
In language:
- Placeholder namePlaceholder namePlaceholder names are words that can refer to objects or people whose names are either temporarily forgotten, irrelevant, or unknown in the context in which they are being discussed...
, words that can refer to objects or people, whose names are unknown or irrelevant - Filler textFiller textFiller 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...
, shares some characteristics of a real written text, but is random or otherwise generated - Lorem ipsumLorem ipsumIn publishing and graphic design, lorem ipsum[p] is placeholder text commonly used to demonstrate the graphics elements of a document or visual presentation, such as font, typography, and layout...
, text used to demonstrate the font, typography or layout in a document
In mathematics and computer science:
- Free variables and bound variablesFree variables and bound variablesIn mathematics, and in other disciplines involving formal languages, including mathematical logic and computer science, a free variable is a notation that specifies places in an expression where substitution may take place...
, symbols that will later be replaced by some literal string - Metasyntactic variableMetasyntactic variableIn computer science, programmers use metasyntactic variables to describe a placeholder name or an alias term commonly used to denote the subject matter under discussion or an arbitrary member of a class of things under discussion...
, alias term used to denote the subject matter under discussion - Format placeholder, used to format strings in printf functions
In politics:
- Placeholder (politics)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....
, a person appointed to an office temporarily, until a permanent replacement can be chosen.