[stringtemplate-interest] Expressions in $if(...)$ statements.

[Magdalin, Vlad]

Hi,

 

I'm moving over from NVelocity to ST, and so far really liking the
strict separation of concerns. However, there are two areas of
functionality that are kind of in a gray area, and I'm wondering if ST
supports them:

 

1. Boolean operators in if() statements, for example:

 

$if(someBoolValue AND someOtherBoolValue)$ ... 

            ...

$endif$

 

Is this possible? I'm finding myself putting together extra Boolean
variables and passing them to the view data, but seems like this type of
simple logic does not violate M/V/C separation purity any more than a
one-value if statement does.  I've found this post
(http://www.antlr.org/pipermail/stringtemplate-interest/2005-June/000055
.html) from Terence, but can't seem to find if anything ever came of it.

 

2. Simple arithmetic operations that resolve to a boolean:

 

$if(items.Count == 1)$

 ... 

$endif$

 

Right now, I'm finding myself doing things like this to check if a list
has one and only one item:

 

This zoo contains $zebras.Count$ $if(rest(zebras))$ zebras $else$ zebra
$endif$

 

I'm wondering if even simple logic like this doesn't belong in the view
according to the ST methodology.  Any help or insight is appreciated!

 

Thanks,

Vlad

 

 

 

 

 

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