Turning named vectors into data.frame/tibble

[rentrop]

FEATURE REQUEST (hope that purrr is the right place for this)

Following up on this SO question:

A shortcut for turning named vectors into data.frame/tibble would be great:
For me a common task is to turn named vectors into data.frames. bind_rows and map_df do not handle this nicely. So you can do one of the following workarounds:

require(tidyverse)
vec <- c("a" = 1, "b" = 2)
# Version one
vec %>% enframe %>% spread(name, value)
# Version two
vec %>% t %>% as_tibble

A usecase in a purrr setting: (this is why i put the feature-request as a purrr issue)

require(tidyverse)
require(rvest)
txt <- c('<node a="1" b="2"></node>',
         '<node a="1" c="3"></node>')

txt %>% map(read_xml) %>% map(xml_attrs) %>% map_df(~t(.) %>% as_tibble)

Which gives you:

# A tibble: 2 × 3
      a     b     c
  <chr> <chr> <chr>
1     1     2  <NA>
2     1  <NA>     3

[lionel-]

I think this is tidyverse/dplyr#1676

[jennybc]

This XML example comes up for me frequently 👍.

[rentrop]

One more case where it woule be handy: here

[hadley]

Can you file this in tibble please?