tidytable (version 0.5.1)

map.: Apply a function to each element of a vector

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, ...)
dt_map(.x, .f, ...)
map_lgl.(.x, .f, ...)
dt_map_lgl(.x, .f, ...)
map_int.(.x, .f, ...)
dt_map_int(.x, .f, ...)
map_dbl.(.x, .f, ...)
dt_map_dbl(.x, .f, ...)
map_chr.(.x, .f, ...)
dt_map_chr(.x, .f, ...)
map_dfc.(.x, .f, ...)
dt_map_dfc(.x, .f, ...)
map_dfr.(.x, .f, ..., .id = NULL)
dt_map_dfr(.x, .f, ..., .id = NULL)
map_df.(.x, .f, ..., .id = NULL)
dt_map_df(.x, .f, ..., .id = NULL)
walk.(.x, .f, ...)
map2.(.x, .y, .f, ...)
dt_map2(.x, .y, .f, ...)
map2_lgl.(.x, .y, .f, ...)
dt_map2_lgl(.x, .y, .f, ...)
map2_int.(.x, .y, .f, ...)
dt_map2_int(.x, .y, .f, ...)
map2_dbl.(.x, .y, .f, ...)
dt_map2_dbl(.x, .y, .f, ...)
map2_chr.(.x, .y, .f, ...)
dt_map2_chr(.x, .y, .f, ...)
map2_dfc.(.x, .y, .f, ...)
dt_map2_dfc(.x, .y, .f, ...)
map2_dfr.(.x, .y, .f, ..., .id = NULL)
dt_map2_dfr(.x, .y, .f, ...)
map2_df.(.x, .y, .f, ..., .id = NULL)
dt_map2_df(.x, .y, .f, ..., .id = 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

.y

A list or vector

Examples

# NOT RUN {
map.(c(1,2,3), ~ .x + 1)

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

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