index_l: Construct a lens into an index/name
In lenses: Elegant Data Manipulation with Lenses

This is the lens version of [[

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index_l(el)

index(el)

`el`	The element the lens should point to can be an `integer` or name.

x <- 1:10
view(x, index_l(1))
set(x, index(5), 50)
head(view(iris, index(2)))

lenses documentation built on May 2, 2019, 8:51 a.m.

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