Re: [boost] [Boost Review] Property Tree Library

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2006-04-23 17:21:25

Daniel Walker wrote:
> On 4/23/06, Thorsten Ottosen <thorsten.ottosen_at_[hidden]> wrote:

>>>Schemas give you data types and type checking, which obviously is
>>>nice to have when you're dealing with data. I think XML schema
>>>validation is one of the most import features of XML for the same
>>>reason that I like C++ templates and type-safe compile time
>>>polymorphism: making sure your data types are correct before hand
>>>gives you one less thing to worry about.
>>
>>Why is that better than a run-time exception when loading the file?
> 
> 
> Why is what better? Maybe I wasn't clear. When an XML file includes a
> schema and fails validation when loaded, you do get a run-time
> exception. I was trying to say that's a good thing. An XML validating
> parser is similar to a compiler for a strongly typed language: it
> catches type errors (in addition to syntax errors) immediately before
> you actually try to use the file.

Ok, why is that exception better than the one I generate if I don't meet 
the tag I expect, of if the contents of a tag is not of the type I expect?

-Thorsten