xie-qianyue

# common.lib
# Note no #!/bin/sh as this should not spawn 
# an extra shell. 

STD_MSG="About to rename some files..."

rename()
{
  # expects to be called as: rename .txt .bak 
  FROM=$1

xie-qianyue

echo -en "Please guess the magic number: "
read X
echo $X | grep "[^0-9]" > /dev/null 2>&1
if [ "$?" -eq "0" ]; then
  # If the grep found something other than 0-9
  # then it's not an integer.
  echo "Sorry, wanted a number"
else
  # The grep found only 0-9, so it's an integer. 
  # We can safely do a test on it.

xie-qianyue

#!/bin/sh
if [ "$X" -lt "0" ]
then
  echo "X is less than zero"
fi
if [ "$X" -gt "0" ]; then
  echo "X is more than zero"
fi
[ "$X" -le "0" ] && \
      echo "X is less than or equal to  zero"

xie-qianyue

@Component
@Slf4j
public class PersonBeanDefinitionRegistryPostProcessor
		implements BeanDefinitionRegistryPostProcessor {

    @Override
    public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry)
    throws BeansException {
        // 注册Bean定义，容器根据定义返回bean
        log.info("register personManager1>>>>>>>>>>>>>>>>");

xie-qianyue

public class DevLBRule extends AbstractLoadBalancerRule {

    @Value("${some.ip.prefix}")
    private String ipPrefix = "10.20.";

    @Override
    public void initWithNiwsConfig(IClientConfig iClientConfig) {

    }

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public class BeanFactoryPostProcessorExample {

  public static void main (String[] args) {
      AnnotationConfigApplicationContext context =
                new AnnotationConfigApplicationContext(MyConfig.class);
      MyBean bean = context.getBean(MyBean.class);
      bean.doSomething();
  }
}

xie-qianyue

public class BeanDefinitionBuilderExample {

  public static void main (String[] args) {
      DefaultListableBeanFactory beanFactory =
                new DefaultListableBeanFactory();

      BeanDefinitionBuilder b =
                BeanDefinitionBuilder.rootBeanDefinition(MyBean.class)
                                     .addPropertyValue("str", "myStringValue");

xie-qianyue

public class GenericBeanDefinitionExample {

  public static void main (String[] args) {
      DefaultListableBeanFactory context =
                new DefaultListableBeanFactory();

      GenericBeanDefinition gbd = new GenericBeanDefinition();
      gbd.setBeanClass(MyBean.class);

      MutablePropertyValues mpv = new MutablePropertyValues();

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function foo() { 
  var f = (...args) => args[0]; 
  return f(2); 
}

console.log(foo()); // 2

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function Person(){
  this.age = 0;

  setInterval(() => {
    this.age++; // |this| properly refers to the person object
    console.log(this.age); // 1 2 3 ...
  }, 1000);
}

var p = new Person();