Helper to create vectors with matching length.

These functions take the idea of seq_along() and generalise it to creating lists (list_along) and repeating values (rep_along).

list_along(x)

Arguments

x	A vector.
y	Values to repeat.

Value

A vector of the same length as x.

Examples

x <- 1:5
rep_along(x, 1:2)
#> [1] 1 2 1 2 1
rep_along(x, 1)
#> [1] 1 1 1 1 1
list_along(x)
#> [[1]]
#> NULL
#> 
#> [[2]]
#> NULL
#> 
#> [[3]]
#> NULL
#> 
#> [[4]]
#> NULL
#> 
#> [[5]]
#> NULL
#>