[stringtemplate-interest] need a null value for arguments?

[Udo Borkowski]

Not sure about the semantic of null.

E.g. assume you have this template

t(s="world") ::= "Hello <s>"

What will 

<t(null)>

render? 

a) "Hello " (i.e. same as <t("")>)
b) "Hello world" (i.e. same as <t()>)
c) "Hello null" 
d) something else?


Also: to avoid confusion with the Java null maybe call the constant 'undefined'?


Udo



On 31.07.2011, at 21:03, Terence Parr wrote:

> Hi, we have true/false but I think we need null too. i have a function called from two places and I need one to say "no value" as an arg.
> 
> [sorry i'm behind in ST email!]
> 
> Ter
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