FR: destructuring assignment in mutate

[t-kalinowski]

Now that I'm getting used to zeallot, I find myself wishing I could use it in mutate.
A motivating example based on within. It would be nice if something similar could work within mutate.

library(purrr)
library(zeallot)
library(tibble)
# dummy data
(df <- tibble(id = paste0(sample(c("M", "F"), 6, T), ".", sample(20:50, 6, T) )))
#> # A tibble: 6 x 1
#>   id   
#>   <chr>
#> 1 M.34 
#> 2 F.32 
#> 3 M.41 
#> 4 F.26 
#> 5 F.27 
#> 6 M.21

within(df, c(sex, age) %<-% simplify_all(transpose(strsplit(id, ".", fixed =TRUE))))
#> # A tibble: 6 x 3
#>   id    age   sex  
#>   <chr> <chr> <chr>
#> 1 M.34  34    M    
#> 2 F.32  32    F    
#> 3 M.41  41    M    
#> 4 F.26  26    F    
#> 5 F.27  27    F    
#> 6 M.21  21    M

Created on 2018-02-22 by the reprex package (v0.2.0).

[romainfrancois]

This is similar to #2326

[lock]

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