tidytable (version 0.10.2)

map: Apply a function to each element of a vector or list

Description

The map functions transform their input by applying a function to each element and returning a list/vector/data.table.

• map() returns a list

• _lgl(), _int, _dbl,_chr, _df variants return their specified type

• _dfr & _dfc Return all data frame results combined utilizing row or column binding

Usage

map(.x, .f, ...)
map_lgl(.x, .f, ...)
map_int(.x, .f, ...)
map_dbl(.x, .f, ...)
map_chr(.x, .f, ...)
map_dfc(.x, .f, ...)
map_dfr(.x, .f, ..., .id = NULL)
map_df(.x, .f, ..., .id = NULL)
walk(.x, .f, ...)
map_vec(.x, .f, ..., .ptype = NULL)
map2(.x, .y, .f, ...)
map2_lgl(.x, .y, .f, ...)
map2_int(.x, .y, .f, ...)
map2_dbl(.x, .y, .f, ...)
map2_chr(.x, .y, .f, ...)
map2_dfc(.x, .y, .f, ...)
map2_dfr(.x, .y, .f, ..., .id = NULL)
map2_df(.x, .y, .f, ..., .id = NULL)
map2_vec(.x, .y, .f, ..., .ptype = NULL)
pmap(.l, .f, ...)
pmap_lgl(.l, .f, ...)
pmap_int(.l, .f, ...)
pmap_dbl(.l, .f, ...)
pmap_chr(.l, .f, ...)
pmap_dfc(.l, .f, ...)
pmap_dfr(.l, .f, ..., .id = NULL)
pmap_df(.l, .f, ..., .id = NULL)
pmap_vec(.l, .f, ..., .ptype = NULL)

Arguments

.x

A list or vector

.f

A function

...

Other arguments to pass to a function

.id

Whether map_dfr() should add an id column to the finished dataset

.ptype

ptype for resulting vector in map_vec()

.y

A list or vector

.l

A list to use in pmap

Examples

map(c(1,2,3), ~ .x + 1)

map_dbl(c(1,2,3), ~ .x + 1)

map_chr(c(1,2,3), as.character)