Quick DF — quick

This is a speedier implementation of as.data.frame() but does not provide the same sort of checks. It should be used with caution.

Usage

quick_df(x = NULL)

empty_df()

quick_dfl(...)

Arguments

x: A list or NULL (see return)
...: Columns as tag = value (passed to list())

Value

A data.frame; if x is NULL a data.frame with 0 rows and 0 columns is returned (similar to calling data.frame() but faster). empty_df() returns a data.frame with 0 rows and 0 columns.

Examples

# unnamed will use make.names()
x <- list(1:10, letters[1:10])
quick_df(x)
#>     1 2
#> 1   1 a
#> 2   2 b
#> 3   3 c
#> 4   4 d
#> 5   5 e
#> 6   6 f
#> 7   7 g
#> 8   8 h
#> 9   9 i
#> 10 10 j

# named is preferred
names(x) <- c("numbers", "letters")
quick_df(x)
#>    numbers letters
#> 1        1       a
#> 2        2       b
#> 3        3       c
#> 4        4       d
#> 5        5       e
#> 6        6       f
#> 7        7       g
#> 8        8       h
#> 9        9       i
#> 10      10       j

# empty data.frame
empty_df() # or quick_df(NULL)
#> data frame with 0 columns and 0 rows