## Problem –

You want to know what variables and functions are defined in your workspace.

## Solution –

To list all variables and functions in your workspace, we use the** ls()** function.

Let’s define some variables and function to illustrate it.

```
a <- 5
b <- 10
c <- a + b
f <- function(n, p) sqrt(p * (1-p) / n)
```

Now let;s use the** ls()** function.

```
> ls()
[1] "a" "b" "c" "f"
```

You can also see your variables and functions in the environment pane in RStudio.

If you want more than just a list of names, try the** ls.str()**. This will also tell you something about each variables.

```
> ls.str()
a : num 5
b : num 10
c : num 15
f : function (n, p)
```