List Functions

List Functions
Name	Description
get	Look up element in a list or time series: `get([1,2,3], 1)` returns `1` `get(a, "Dec 30, 2008")` returns the value for Dec 30, 2008 for the time series a
length	Number of elements in a list or time series
car	Returns the head element in a list: `car([1,2,3])` returns `1`
cdr	Returns the tail element in a list: `cdr([1,2,3])` returns `[2,3]`
reverse	Reverse the order of a list: `reverse([1,2,3])` returns `[3,2,1]`