1. A brief introduction to 11ACM 朱旻申

2. Outline What is Groovy ? Differences between Groovy & Java About closure & Dagger Methods

3. Groovy … An agile and dynamic language for the Java Virtual Machine Builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk Provides the ability to statically type check and statically compile your code

4. An Example In Groovy : In Java :

5. Grammar vs Java No “;”, “()” & “public” No constructor, no “return” No types, everything is an object Closure

6. Grammar Java without types

7. Grammar Loop

8. Grammar Use “?” to avoid NULL pointer call

9. Closure Codes in “{}”

10. Closure in iteration

12. Dagger Methods Short, small but efficient Mostly implemented by closure

13. eachWithIndex Running results : 1 : a 2 : b 3 : c

14. any & every Running results : true false

15. grep [‘a’, ‘ab’] [‘ab’]

16. sort Running results : 7, 23, 2012

17. References http:\\groovy.codehaus.org Wikipedia 百度文库