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Placeholder
From Wikipedia, the free encyclopedia
- For the World of Warcraft ex-NPC, see Captain Placeholder.
A placeholder is a term, sign or some other thing which generally stands in the place of a term, etc., with a specific meaning.
In disciplines involving formal languages, particularly mathematics and logic, the placeholder concept is replaced by the more carefully defined concepts of free variables and bound variables. In computer science placeholders are sometimes referred to as metasyntactic variables.
In politics, a placeholder is sometimes used to indicate that a person is acting in a position on a non-permanent basis or as a proxy.
- Placeholder name
- Trope
- Filler text
- Lorem ipsum
- Hello world program, used in many introductory tutorials and as first programming experience
- The quick brown fox jumps over the lazy dog, text used to test typewriters
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