fishyych

One of the most under-used programming techniques iswriting programs that generate programs or program parts. Learn whymetaprogramming is necessary and look at some of the components ofmetaprogramm...

groovy提供了一个动态bean：Expando，它可以简化我们对于bean的操作。def fred=new Expando()fred.age=20fred.birth = {fred.age++}fred.birth()println fred.age 

grails提供了3种运行的环境，分别是development, test, production。比如数据库等资源可以配置以后在不同的环境中有不同的数据源和配置。运行某环境的方法为：grails prod run-appor:　grails -Dgrails.env=prod run-app ...

def current_path(): path=os.path.realpath(sys.path[0]) if os.path.isfile(path): path=os.path.dirname(path) return os.path.abspath(path) else: call...