This function first export the data.frame to a temporal file, and then parse it back as a fst table (class name is "fst_table").
as_fst(.data)An object of class fst_table
# \donttest{
iris %>%
as_fst() -> iris_fst
iris_fst
#> <fst file>
#> 150 rows, 5 columns (.333c77b27e8.fst)
#>
#> Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> <double> <double> <double> <double> <factor>
#> 1 5.1 3.5 1.4 0.2 setosa
#> 2 4.9 3.0 1.4 0.2 setosa
#> 3 4.7 3.2 1.3 0.2 setosa
#> 4 4.6 3.1 1.5 0.2 setosa
#> 5 5.0 3.6 1.4 0.2 setosa
#> -- -- -- -- -- --
#> 146 6.7 3.0 5.2 2.3 virginica
#> 147 6.3 2.5 5.0 1.9 virginica
#> 148 6.5 3.0 5.2 2.0 virginica
#> 149 6.2 3.4 5.4 2.3 virginica
#> 150 5.9 3.0 5.1 1.8 virginica
# }