r - Randomly remove duplicated rows using dplyr() -

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as follow-up question one: remove duplicated rows using dplyr, have following:

how randomly remove duplicated rows using dplyr() (among others)?

my command is

data.uniques <- distinct(data, keyvariable, .keep_all = true)

but returns first occurrence of keyvariable. want behaviour random: anywhere between 1 , n occurrences of keyvariable.

for instance:

keyvariable bmi 1 24.2 2 25.3 2 23.2 3 18.9 4 19 4 20.1 5 23.0

currently command returns

keyvariable bmi 1 24.2 2 25.3 3 18.9 4 19 5 23.0

i want randomly return 1 of n duplicated rows, instance:

keyvariable bmi 1 24.2 2 23.2 3 18.9 4 19 5 23.0

just shuffle rows before selecting first occurrence (using distinct). 

library(dplyr) distinct(df[sample(1:nrow(df)), ],           keyvariable,           .keep_all = true)




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