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Everything about Abstract type

Feature of a programming language

In programming languages, an abstract type is a type in a nominative type system that cannot be instantiated directly; by contrast, a concrete type can be instantiated directly. Instantiation of an abstract type can occur only indirectly, via a concrete subtype. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Abstract typeA 5-minute orientation
  2. Skim a recent paper: (N,λ)-periodic solutions to abstract difference equations of convolution typeInfluential work since 2022
  3. Pick up a classic book: BluebeardThe most-reprinted book on the subject
  4. Read the landmark paper: Abstract types have existential typeCited 267 times
  5. Go sideways: Java syntaxA closely related topic
  6. Go sideways: Class (programming)A closely related topic

📖 Definitions

Noun a type in a nominative type system that cannot be instantiated.

🗂️ The subject at a glance

  1. Creation
  2. Examples
  3. Usage

🏆 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