Scala Web Development with Spring Framework
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The document discusses introducing Scala for web development. It provides an overview of Scala's features like static typing, functional programming support, and frameworks. It then recommends a path for easing into Scala web development by starting with an existing Java/Spring project and gradually adopting Scala. Alternatives like Lift and Akka are also briefly mentioned.
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Scala Web Development with Spring Framework
- 1. Ease into Scala Web Development Phil Miller
- 3. 10 years in Java web dev
- 6. A Scala/Spring webapp recipe
- 8. Created by Martin Odersky 2001
- 9. Static Typing with Type inference
- 12. Object-Orientated – everything an object, traits
- 14. IDE support and a REPL
- 15. Scala frameworks + a gazillion Java ones
- 17. Prove absence of some runtime errors
- 18. Removes fear of refactoring
- 19. Performance optimizations var foo: String ”bar” :String var foo 1 :Integer
- 21. Encapsulation protects source of List[Account]
- 23. Expressive and compact syntax
- 24. Encourages a functional style Introduction to Scala
- 26. Expressive and compact syntax
- 27. Encourages a functional style Introduction to Scala
- 29. Expressive and compact syntax
- 30. Encourages a functional style Introduction to Scala
- 33. Expressiveness and comprehension indirectly proportional Introduction to Scala
- 35. Implicit conversions & parameters
- 36. IDE support not equal to Java yet
- 37. Compile times
- 38. Java 3 rd party API interop – i.e. Hibernate @OneToMany
- 39. Readability
- 40. You won't want to write Java again
- 43. Readability: comprehension , maintainable
- 44. Tooling & IDEs
- 45. Testability
- 46. Performance
- 47. Portability
- 48. Frameworks
- 50. Decision Matrix: Properties of a Language Java Scala Writability Readability IDE support
- 52. Maven
- 53. Junit
- 54. Specs
- 55. Scala
- 56. http://github.com/idrop/scala-spring Html / jQuery Spring 3.0 MVC Container MyController MyService Storage: Actor
- 58. Same deployment unit as Java
- 59. Choose something ancillary to your big project
- 60. Don't give up over IDE support
- 61. Dojos with REPL
- 63. Copy src/main/java & src/test/java to src/main/scala & src/test/scala
- 64. Rename copied java files to *.scala
- 66. Don't use an IDE yet!
- 67. Scala-ify src/main/scala first
- 68. New suite of Scala tests pass
- 70. Lift
- 71. Akka
- 72. C#
- 75. Simon Peyton-Jones on funtional programming: http://tinyurl.com/se-radio-haskell
- 76. Akka Tutorial: http://jonasboner.com/2010/01/04/introducing-akka.html
- 79. Scala for Java Refugees: http://www.codecommit.com/blog/scala/roundup-scala-for-java-refugees
- 80. Daily Scala: http://daily-scala.blogspot.com/
- 81. Coding Dojos: http://www.codingdojo.org/
- 83. Expressive and compact syntax
- 84. Encourages a functional style
- 85. Evolving to a Functional Style
- 87. Use Scala REPL to determine proportion of responses at each proficiency level Grpah here
- 88. Becoming 'functional' /** * all accounts for this user, given user id */ public List<Account> getAccounts(String id) { return accounts.get(id); } public List <Account> getAccounts(String id) { return Collections.unmodifiableList (accounts.get(id)); }
- 93. JVM
- 94. Type inference & Type safety
- 95. Expressive datastructures, pattern matching
- 97. REPL
- 98. Traits
- 99. Typing Dynamic Typing Static Typing Strong typing 1 . Groovy, Jruby, Javascript 2 . Java, Scala, C# Weak typing 3 . Perl C Variable Value var a: String ” 1” :String var a ” 1”
- 100. Scala v. others Scala Groovy Ruby Clojure C# Low barrier to entry from Java JVM Type inference Type safety Expressive Correctness in concurrency REPL Traits