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Recorded at:
Writing DSLs in Groovy
Presented by
Scott Davis
on
Jun 29, 2009
Length 00:59:55
- Sections
- Development,
- Architecture & Design
- Topics
- Domain Specific Languages ,
- Architecture ,
- Java
- Tags
- QCon ,
- Groovy ,
- JVM ,
- QCon London 2009
-
- The next QCon is in London March 5-9, Join us!
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Summary
In this presentation recorded at QCon London 2009, after a short introduction to DSLs, Scott Davis plays with the keyboard showing how to approach the creation of a DSL by typing working snippets of Groovy code that get executed in front of the audience.
Bio
Author of the book Groovy Recipes: Greasing the Wheels of Java, Scott has been involved in creating web sites in Grails since 2006. Scott teaches public and private classes on Groovy and Grails for start-ups and Fortune 100 companies. He is the co-founder of the Groovy/Grails Experience conference and ThirstyHead.com, a training company that specializes in Groovy and Grails training.
About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.
In this presentation recorded at QCon London 2009, after a short introduction to DSLs, Scott Davis plays with the keyboard showing how to approach the creation of a DSL by typing working snippets of Groovy code that get executed in front of the audience.
Bio
Author of the book Groovy Recipes: Greasing the Wheels of Java, Scott has been involved in creating web sites in Grails since 2006. Scott teaches public and private classes on Groovy and Grails for start-ups and Fortune 100 companies. He is the co-founder of the Groovy/Grails Experience conference and ThirstyHead.com, a training company that specializes in Groovy and Grails training.
About the conference
QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community. QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.
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Should read "scripting with Groovy"
by
Hermann Schmidt
Posted
Re: Should read
by
Scott Davis
Posted
2.hours and 10.minutes
by
Hossam Karim
Posted
great presentation
by
Gilad Manor
Posted
The video seems to doesn't work anymore...
by
Dragan Stankovic
Posted
Re: The video seems to doesn't work anymore...
by
Dragan Stankovic
Posted
Re: The video seems to doesn't work anymore...
by
Floyd Marinescu
Posted
grade
by
Gene De Lisa
Posted
-
Most of the talk is about conventional scripting that has always been around in some form. A bunch of interesting Groovy tricks (for newbies) are presented. Calling a console script that understands a few commands a DSL is a bit over the top in my opinion.
The last 10 minutes or so Scott quickly demonstrates how to extend the meta class of a closed (final) Java class (Integer) to do the ubiquitous "2.hours + 10.minutes" example. That's more like it. -
class Movie(var title:String, var duration: Int) {
override def toString = title + " runs for " + duration + " minutes"
}
implicit def units(i: Int) = new {
def hours = i * 60
def minutes = i
def and(j: Int) = i + j
}
val starWars = new Movie("Star Wars", 2.hours and 30.minutes)
println(starWars) -
it really made my fingures itch:)
-
Does anyone have similar problem?
-
Now it works again (don't know what happened in the meantime)
-
We recently deployed a fix for some video problems we were having. Thanks Dragan.
-
Thanks for your comment, Hermann. This is admittedly a basic presentation - it doesn't assume previous knowledge of Groovy or DSLs. You clearly preferred the internal DSL over the external. That's cool. If I could've been guaranteed an audience with deep experience in both Groovy and DSLs, I could've spent the entire hour covering just that.
-
The presenter gets an A for his knowledge of the topic.
The videographer was a bit clueless on the terminal screenshots when zooming in on the left side of directory listings. We were all wondering what the permissions were and not what he was talking about right?
As a presenter he gets a D. The first half is mostly about him. Count how many times he uses the word "I".
That is the problem with these conferences. The entire point is gratifying the ego of the presenter; the anti-pattern to Kathy Sierra's "you rock".
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