mlr3misc: has_element – R documentation

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has_element

Check if an Object is Element of a List

Simply checks if a list contains a given object.

NB1: Objects are compared with identity.
NB2: Only use this on lists with complex objects, for simpler structures there are faster operations.
NB3: Clones of R6 objects are not detected.

has_element(.x, .y)

`.x`	(`list()` \| atomic `vector()`).
`.y`	(`any`) Object to test for.

has_element(list(1, 2, 3), 1)

Helper Functions for 'mlr3'

v0.10.0

LGPL-3

Authors

Michel Lang [cre, aut] (<https://orcid.org/0000-0001-9754-0393>), Patrick Schratz [aut] (<https://orcid.org/0000-0003-0748-6624>)

Initial release