make a new Type of MutableHashTable display its contents

[Andrew Critch]

(Any help with this question will be greatly appreciated :)

MutableHashTables by default do not display their contents.  However, a MutableMatrix *does* display a summary of its contents when called.  Now I've defined the type MutableNest by

MutableNest = new Type of MutableHashTable

How can I install a method for displaying a description of a MutableNest whenever it is the output?  More precisely, there seems to be a command, call it "printMutableMatrix", such that whenever an output M occurs which is a mutable matrix, "printMutableMatrix M" is executed (example below).  I'd like to define a command like printMutableNest and tell Macaulay2 to use it to display MutableNests in the same way.  How can I do this?

Thanks for any help!!

--

Critch, Andrew
UC Berkeley
http://math.berkeley.edu/~critch/

[Grayson, Daniel R.]

Install a method for "net", like this:

i1 : MutableNest = new Type of MutableHashTable

o1 = MutableNest

o1 : Type

i2 : x = new MutableNest

o2 = MutableNest{}

o2 : MutableNest

i3 : net MutableNest := t -> "hi there";

i4 : x

o4 = hi there

o4 : MutableNest

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[Andrew Critch]

Excellent!!  Thank you very much!!