[stringtemplate-interest] dealing with empty list values

[Terence Parr]

Howdy,

Imagine a list of strings.  Some are null.  You are generating code  
and you want

String[] a = {
   "abc",
   "",
   "def",
   "",
   "",
};

where the "" values are there when the list element is null.   
Currently ST skips these values and you have no chance to insert "".   
You must alter the data to have "".  This is not so bad UNLESS you  
have a List<List<int>>, for example, and the strings are built by ST  
not by the model.

Any ideas how we can alter the semantics of ST to allow both skpping  
and not skipping of null values in an iteration?  Another option on  
the <data; noskip> expression?

Ter