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KeyTake

Status: Stable

documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

Description

KeyTake[assoc, {k1, ...}]
    Gives the association of only the specified keys (order preserved).

Examples

All examples below are verified against the current Mathilda build.

In[1]:= KeyTake[<|"a" -> 1, "b" -> 2, "c" -> 3|>, {"c", "a"}]
Out[1]= <|"a" -> 1, "c" -> 3|>

In[2]:= KeyTake[{<|"a" -> 1, "b" -> 2|>, <|"a" -> 3, "b" -> 4|>}, {"a"}]
Out[2]= {<|"a" -> 1|>, <|"a" -> 3|>}

Implementation notes

Attributes: Protected.

Implementation status

Stable — documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

References