![(define cdar-sequence?
(automaton init
[init : (c -> more)]
[more : (a -> more)
(d -> more)
(r -> end)]
[end : accept]))](https://image.slidesharecdn.com/dslseruby-091013151938-phpapp02/85/DSLs-Internas-e-Ruby-19-320.jpg)
![Dúvidas?
Obrigado!
fabio.kung @ [gmail locaweb]
http://twitter.com/fabiokung](https://image.slidesharecdn.com/dslseruby-091013151938-phpapp02/85/DSLs-Internas-e-Ruby-25-320.jpg)
Uploaded byFabio Kung
DSLs Internas e Ruby
The document discusses domain-specific languages (DSLs) and provides examples of internal and external DSLs. It mentions using DSLs to define date operations and search queries. Code snippets demonstrate building DSLs in Ruby and Scala, including using automata and semantic models. The document advises always using a semantic model and provides tips on metaprogramming techniques in Ruby like method_missing and class_eval. It concludes by thanking the reader and providing contact information.
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DSLs Internas e Ruby
- 1. DSLs Internas e Ruby @fabiokung
- 3. DSL? http://www.flickr.com/photos/pragdave/173640462/
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- 7. Date.today + 2.months 4.weeks.ago DSLs internas
- 8. var d1 =Hoje mais 2 meses var d2 = Amanhã menos 1 mês e mais 10 anos e mais 1 dia Scala: http://gist.github.com/207718 (by Sergio Lopes) Date.today + 2.months 4.weeks.ago DSLs internas
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- 10. Feature: Search courses In order to ensure better utilization of courses Potential students should be able to search for courses Scenario: Search by topic Given there are 240 courses without topic "biology" And there are 2 courses A001, B205 with topic "biology" When I search for "biology" Then I should see the following courses: | Course code | | A001 | | B205 | DSLs externas
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- 19. (define cdar-sequence? (automaton init [init : (c -> more)] [more : (a -> more) (d -> more) (r -> end)] [end : accept]))
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- 22. http://martinfowler.com/dslwip/SemanticModel.html My advice is to always use a Semantic Semantic Model
- 23. Resumo • Module.included(klass) • obj.extend(Module) •Class.class_eval { ... } • obj.send(method) • obj.instance_eval { ... }
- 24. E mais... • method_missing(name,*args) • Class.inherited(subclass) • lambdas, Proc • ...
- 25. Dúvidas? Obrigado! fabio.kung @ [gmail locaweb] http://twitter.com/fabiokung