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DLS 2018
Sun 4 - Fri 9 November 2018 Boston, Massachusetts, United States
co-located with SPLASH 2018
Tue 6 Nov 2018 15:30 - 16:00 at The Loft - Systems

We present a declarative, object-oriented language in which queries play a central role. Queries are used not only to access data, but also to refer to the application's object members and as a means of program control. The language is fully declarative, with queries and other pure functions defining the relations between the attributes of different objects. A rule-base-like write operation allows state to be updated. Control is achieved by queries selecting the class variants (mixin classes) which are active in each object. The dynamic activation and deactivation of declarative mixin classes allows decomposition of functionality into small reusable classes.

The programming style in the language is functional and reactive, with function applications defining object members. Queries are one type of function, which also serves as the glue which puts these functions together, providing them with their input. Since queries describe declaratively \emph{what} they return, they leave it to the system to implement the \emph{how} of getting it. Combining this with an organization around objects makes the language highly suitable for complex interactive applications driven by large amounts of data from multiple sources.

Our implementation of the language includes a strong display component. It can be seen as a conceptual extension of HTML and CSS in a way which replaces the need for the JavaScript imperative component in web applications. The work described here is not restricted, however, to front-end development and can be applied elsewhere as well.

Tue 6 Nov

dls-2018
15:30 - 17:00: DLS 2018 - Systems at The Loft
dls-201815:30 - 16:00
Talk
Yoav Seginercdl-lang.org, Netherlands, Theo Vossecdl-lang.org, Netherlands, Gil Hararicdl-lang.org, Israel, Uri Kolodnycdl-lang.org, Israel
dls-201816:00 - 16:30
Talk
Guido ChariCzech Technical University, Czechia, Javier PimásPalantir Solutions, Argentina, Jan VitekNortheastern University, Olivier FlückigerNortheastern University, USA
dls-201816:30 - 17:00
Talk
David HerreraMcGill University, Canada, Hanfeng ChenMcGill University, Canada, Erick LavoieMcGill University, Canada, Laurie HendrenMcGill University, Canada