# arglist proc

Source: https://ref.dm-lang.org/proc/arglist

### Format
> `arglist(List)`

### Args
> List: a list to be used as the arguments to a procedure

Normally, if you were to pass a list directly to a procedure, it would only come through as a singe argument to that procedure. In some cases, you might instead want the items in the list to become the arguments to the procedure. That is what `arglist()` achieves.

If the items in the list are associations, these are treated as [named arguments](https://ref.dm-lang.org/proc/arguments/named.md). Each such list item is matched against the names of the procedure arguments and its associated value is assigned to that parameter.

Most built-in DM instructions do not support use of `arglist()`, but all user-defined procedures automatically support it. The built-in instructions which support named arguments will also support `arglist()`.

The following example shows how to use `arglist()` with both positional parameters and named arguments. Both of these examples could be replaced by a much simpler direct call without need for a list to hold the arguments; this is just to illustrate the syntax.

```dm /arglist/
proc/MyProc(a,b)
   usr << "MyProc([a],[b])"

mob/verb/test()
   var/lst = list(1,2)
   MyProc(arglist(lst))  //MyProc(1,2)

   lst = list(b=2,a=1)   //just to illustrate that order does not matter
   MyProc(arglist(lst))  //MyProc(b=2,a=1)  -->  MyProc(1,2)
```

### See also
- [arguments (proc)](https://ref.dm-lang.org/proc/arguments/index.md)
- [call proc](https://ref.dm-lang.org/proc/call.md)
- [call_ext proc](https://ref.dm-lang.org/proc/call_ext.md)
- [list proc](https://ref.dm-lang.org/proc/list.md)