R: Extract a single character from a string, using its index.

str_elem {strex} | R Documentation

## Extract a single character from a string, using its index.

### Description

If the element does not exist, this function returns the empty string. This is consistent with `stringr::str_sub()`. This function is vectorised over both arguments.

### Usage

    str_elem(string, index)

### Arguments

`string` | A character vector.
`index` | An integer. Negative indexing is allowed as in `stringr::str_sub()`.

### Value

A one-character string.

### See Also

Other single element extractors: `str_elems()`, `str_paste_elems()`

### Examples

    str_elem(c("abcd", "xyz"), 3)
    str_elem("abcd", -2)

[Package strex version 1.3.1 Index]