# n_distinct

From dplyr v0.3
by Hadley Wickham

##### Efficiently count the number of unique values in a vector.

This is a faster and more concise equivalent of `length(unique(x))`

##### Usage

`n_distinct(x)`

##### Arguments

- x
- a vector of values

##### Examples

```
x <- sample(1:10, 1e5, rep = TRUE)
length(unique(x))
n_distinct(x)
```

*Documentation reproduced from package dplyr, version 0.3, License: MIT + file LICENSE*

### Community examples

Looks like there are no examples yet.