Everything About ___
Live briefing

Everything about Union type

Data type that allows for values that are one of multiple different data types

In computer science, a union is a value that may have any of multiple representations or formats within the same area of memory, or a variable that may hold such a data structure. Some programming languages support a union type for such a data type. In other words, a union type specifies the permitted types that may be stored in its instances, e.g., float and int. In contrast with a record, which could be defined to contain both a float and an integer, a union can hold only one at a time. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Union typeA 5-minute orientation
  2. Skim a recent paper: Exponential type bases on a finite union of certain disjoint intervals of equal lengthInfluential work since 2022
  3. Pick up a classic book: The Return of Sherlock HolmesThe most-reprinted book on the subject
  4. Read the landmark paper: Kinematic constraints to the transition redshift from supernovae type Ia union dataCited 167 times
  5. Go sideways: Tagged unionA closely related topic
  6. Go sideways: TypedefA closely related topic

📖 Definitions

No dictionary entry for this exact phrase.

🗂️ The subject at a glance

  1. Untagged unions
  2. Unions in various programming languages
  3. Syntax and example

🏆 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