Questions for an Enterprise Architect
Erik Dörnenburg answers: What is Enterprise and Evolutionary Architecture?, discussing 4 issues: Turning strategy into execution, Ensuring conformance, Where do the architects sit? Buying or building?
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Never heard Liskov talk before, great presentation.
Are the slides out of sync for any one else?
Hello Bedwyr,
I've taken a look at the presentation and there was a small timing error with two of the slides. i have now taken care of it.
Diana (InfoQ)
The slides are out of sync for most videos on Infoq...but it is not a big problem.
And, yes! Great Presentation!
Great talk!
"... programs fundamentally have to do with modifying state" I thought it very interesting.
So she prefers static type checking. I really would like to know the benefits of dynamic type checking. This is not clear to me. :(
Can we download the slides?
Kiran
I guess one of the benefits of dynamic typing is duck-typing. So, if two abstract data-types (A and B) declare method foo(a:Boolean):Boolean, both A and B can be used as arguments of a function that only require that the data-type implements the method foo. This would be a bit like A and B implementing the same interface, but without explicitly declaring it.
This would be particularly useful if you couldn't change the definition of A and B at compile time, but you wanted to be able to call the same operations on them.
Interestingly, MS have added a dynamic type to C# etc. This is really just a way of avoiding lots of ugly casts when using the introspection interfaces to create objects.
The slides are available in PPT and PDF formats from her web page at www.pmg.csail.mit.edu/~liskov/
Erik Dörnenburg answers: What is Enterprise and Evolutionary Architecture?, discussing 4 issues: Turning strategy into execution, Ensuring conformance, Where do the architects sit? Buying or building?
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