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Wolfram Language > Handling Arrays of Data > Elements of Lists > Select
Wolfram Language > List Manipulation > Elements of Lists > Select
Wolfram Language > Associations > Handling Arrays of Data > Elements of Lists > Select
BUILT-IN WOLFRAM LANGUAGE SYMBOL

Select

Select[list,crit]
picks out all elements ei of list for which crit[ei] is True.

Select[list,crit,n]
picks out the first n elements for which crit[ei] is True.

Select[crit]
represents an operator form of Select that can be applied to an expression.

DetailsDetails

ExamplesExamplesopen allclose all

Basic Examples  (5)Basic Examples  (5)

Select elements that are even:

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Use a pure function to test each element:

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Return only the first expression selected:

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Use the operator form of Select:

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Select operates on values in an Association:

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Scope  (5)Scope  (5)

Generalizations & Extensions  (2)Generalizations & Extensions  (2)

Applications  (7)Applications  (7)

Properties & Relations  (1)Properties & Relations  (1)

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Introduced in 1988
(1.0)
| Updated in 2014
(10.0)
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