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Home > Electronics Tutorials > Online Computer Terms Dictionary > D

Online Computer Terms Dictionary - D

discriminated union

<theory> The discriminated union of two sets A and B is

	A + B = {(inA, a) | a in A} U {(inB, b)| b in B}

where inA and inB are arbitrary tags which specify which summand an element originates from.

A type (especially an algebraic data type) might be described as a discriminated union if it is a sum type whose objects consist of a tag to say which part of the union they belong to and a value of the corresponding type.

(1995-04-25)

 


Nearby terms: discrete cosine transform « discrete Fourier transform « discrete preorder « discriminated union » discussion group » Disiple » disjoint union
 

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