Declarative languages build on sound theoretical foundations to provide attractive frameworks for application development. These languages have been successfully applied to a wide array of different real-world situations including database management, active networks, software engineering, web applications, decision support systems, and music composition.

New developments in theory and implementation have opened up new application areas. At the same time, the application of declarative languages to novel problems raises numerous interesting research issues. Well-known questions include designing for scalability, language extensions for application deployment, and programming environments. Thus, applications often drive the progress in the theory and implementation of declarative systems, and benefit from this progress as well.

PADL is a forum for researchers and practitioners to present original work emphasizing novel applications and implementation techniques for all forms of declarative concepts including functional, logic, constraints, etc.

Topics of interest include:

* Innovative applications of declarative languages.
* Declarative domain-specific languages and applications.
* Practical applications of theoretical results.
* New language developments and their impact on applications.
* Declarative languages and Software Engineering.
* Evaluation of implementation techniques on practical applications.
* Practical experiences and industrial applications.
* Novel uses of declarative languages in the classroom.

PADL'10 welcomes new ideas and approaches pertaining to applications and implementation of declarative languages, and is not limited to the scope of the past eleven PADL symposia (past proceedings can be found in Springer Verlag LNCS, numbers 1551, 1753, 1990, 2257, 2562, 3057, 3350, 3819, 4354, 4902, and 5418).

In this occasion PADL is co-located, as traditionally, with ACM POPL, which will be held immediately following PADL, January 20-22. The symposium will be held in Madrid, Spain. Previous PADLs were held in Savannah, Georgia, USA (2009), San Francisco, California, USA (2008), Nice, France (2007), Charleston (2006), Long Beach (2005), Dallas (2004), New Orleans (2003), Portland (2002), Las Vegas (2001), Boston (2000), and San Antonio (1999).