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Everything about Option type

Encapsulation of an optional value in programming or type theory

In programming languages and type theory, an option type or maybe type is a polymorphic type that represents encapsulation of an optional value; e.g., it is used as the return type of functions which may or may not return a meaningful value when they are applied. It consists of a constructor which either is empty, or which encapsulates the original data type A. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Option typeA 5-minute orientation
  2. Skim a recent paper: A waste collection problem with service type optionInfluential work since 2022
  3. Pick up a classic book: Option BThe most-reprinted book on the subject
  4. Read the landmark paper: Complicated Acute Type B Dissection: Is Surgery Still the Best Option?Cited 363 times
  5. Go sideways: Rust syntaxA closely related topic
  6. Go sideways: Attribute (programming)A closely related topic

📖 Definitions

Noun A polymorphic type that represents encapsulation of an optional value.

🗂️ The subject at a glance

  1. Theoretical aspects
  2. Examples

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

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

🔗 Related topics