| prepend {purrr} | R Documentation |
This is a companion to append() to help merging two
lists or atomic vectors. prepend() is a clearer semantic
signal than c() that a vector is to be merged at the beginning of
another, especially in a pipe chain.
prepend(x, values, before = 1)
x |
the vector to be modified. |
values |
to be included in the modified vector. |
before |
a subscript, before which the values are to be appended. |
A merged vector.
x <- as.list(1:3)
x %>% append("a")
x %>% prepend("a")
x %>% prepend(list("a", "b"), before = 3)