[MarkLogic Dev General] Functions with optional arguments

[Tim Finney]

Dear All,

I notice that some of the built-in functions have optional arguments.
For example, both of these are OK:

xdmp:get-request-field("foo")
xdmp:get-request-field("foo", "bar")

How is this done? Is it just a matter of writing more than one function
definition, each with a different signature, or is there another way?

Best,

Tim Finney
XQuery programmer
UVa Press