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Everything about Metasyntactic variable

Placeholder term used in computer science

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. For example, foo and bar 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. Wikipedia →

đź§­ Start here: a 6-step reading path

  1. Read the overview: Metasyntactic variableA 5-minute orientation
  2. Pick up a classic book: Understanding second language processThe most-reprinted book on the subject
  3. Read the landmark paper: Foo, Bar, Baz…: The Metasyntactic Variable and the Programming Language HierarchyCited 2 times
  4. Go sideways: FoobarA closely related topic
  5. Go sideways: Callable objectA closely related topic

đź“– Definitions

Noun A conventional variable name used for an unspecified entity whose exact nature depends on context.

🗂️ The subject at a glance

  1. Common metasyntactic variables
  2. Usage examples
  3. Example data

🏆 Landmark papers (most cited)

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

đź”— Related topics