R: Useful sequences

vec_seq_along {vctrs} | R Documentation

## Useful sequences

### Description

`vec_seq_along()` is equivalent to `seq_along()` but uses size, not length. `vec_init_along()` creates a vector of missing values with size matching an existing object.

### Usage

    vec_seq_along(x)

    vec_init_along(x, y = x)

### Arguments

`x, y` | Vectors

### Value

- `vec_seq_along()` an integer vector with the same size as `x`.

- `vec_init_along()` a vector with the same type as `x` and the same size as `y`.

### Examples

    vec_seq_along(mtcars)
    vec_init_along(head(mtcars))

[Package vctrs version 0.2.4 Index]