[stringtemplate-interest] Question about ASTExpr.TestAttributeTrue

Sam Harwell sharwell at pixelminegames.com
Fri Mar 20 12:11:35 PDT 2009


For enumerable items (do you call them iterable in java?), you check if
the length is > 0. Since a string implements IEnumerable<char> in .NET,
I had to make sure I handle it as a null-check. :)

-----Original Message-----
From: Terence Parr [mailto:parrt at cs.usfca.edu] 
Sent: Friday, March 20, 2009 2:09 PM
To: Sam Harwell
Cc: stringtemplate-interest at antlr.org
Subject: Re: [stringtemplate-interest] Question about
ASTExpr.TestAttributeTrue

True. it's present. IF always tests the presence or absence of an  
attribute, unless of course it's Boolean. Then, I have to test the  
value.
Ter
On Mar 20, 2009, at 12:03 PM, Sam Harwell wrote:

> Is the non-null empty string ("") true or false?
>
> Thanks,
> Sam :)
>
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