Row-bind a list of data frames with a source column

Thin wrapper around data.table::rbindlist() that prepends a column called source with the names of lst. Returns NULL for an empty input.

Usage

bind_with_source(lst)

Arguments

lst

A named list of data frames to bind together.

Value

A data.table with all columns from the inputs and an added source column, or NULL if lst is empty.

Examples

bind_with_source(list(
  a = data.frame(x = 1:2, y = 3:4),
  b = data.frame(x = 5,   z = 9)
))
#>    source     x     y     z
#>    <char> <num> <int> <num>
#> 1:      a     1     3    NA
#> 2:      a     2     4    NA
#> 3:      b     5    NA     9