yangbajing

package test.java;

import java.util.LinkedList;
import java.util.List;

class Listeners {
	private List<Callback> listeners = new LinkedList<Callback>();
	
	public void register(Callback cb) {
		listeners.add(cb);

yangbajing

class PreferredPrompt(val preference: String)

object JoesPrefs {
  implicit val prompt = new PreferredPrompt("Yes, master> ")
}

object Greeter {
  def greet(name: String)(implicit prompt: PreferredPrompt) {
    println("Welcome, " + name + ". The system is ready.")
    println(prompt.preference)

yangbajing

object A {
  val loggerClass = LoggerFactory.getLogger(classOf[A])
  val logger = LoggerFactory.getLogger(A.getClass)
}

class A {
  val logger = A.loggerClass
}

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def opt(paramA: Option[String], paramB: Option[Date], paramC: Option[Int]): Option[String] = {
  for (
    a <- paramA;
    b <- paramB;
    c <- paramC) yield {
    a + " | " + b + " | " + c
  }
}

println(opt(Some("羊八井", Some(new Date), Some(26)))

yangbajing

package demo

import org.scalatest.FlatSpec
import org.scalatest.BeforeAndAfter
import org.scalatest.matchers.ShouldMatchers

class T extends FlatSpec with ShouldMatchers {
  it should ("SSSSSSS") in {
    assert(succ("") == "")
    assert(succ("R2D3") == "R2D4")

yangbajing

package me.yangbajing.util

object TryUsingResources {
  def optionNull[A](f: => A): Option[A] = {
    val a = f
    if (a == null) None
    else Some(a)
  }

  def tryout[R](f: => R): Option[R] = try {

yangbajing

基于cookie的WEB自动登陆功能设计和账户安全性

目标

设计一个基于cookie的安全的自动登陆功能。 简单说就是不在cookie中保存密码，且token值在每次使用后都会更新 ( 类似lift那样 )

计划

yangbajing

package bootstrap.liftweb

import net.liftweb.common.{ Full }
import net.liftweb.http.InternalServerErrorResponse
import net.liftweb.http.{ XHtmlInHtml5OutProperties, LiftRules, Req }
import net.liftweb.mongodb.{ MongoDB, DefaultMongoIdentifier, MongoAddress, MongoHost, MongoIdentifier }
import net.liftweb.sitemap.{ SiteMap, Menu, ** }

import cst.lib.CstProps

yangbajing

scala> Array(1, 6, 6, 4, 5, 6).groupBy(x => x).maxBy{ case (key, group) => group.size -> key }
res5: (Int, Array[Int]) = (6,Array(6, 6, 6))

scala> Array(1, 6, 6, 4, 5, 5, 6, 5).groupBy(x => x).maxBy{ case (key, group) => group.size -> key }
res6: (Int, Array[Int]) = (6,Array(6, 6, 6))

scala> Array(1, 6, 6, 4, 5, 5, 6, 5).groupBy(x => x).maxBy{ case (key, group) => group.size }
res7: (Int, Array[Int]) = (5,Array(5, 5, 5))

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function areaSelect(areaContainer, selectedTxt, selectedVal) {
    $('.area-sub label').click(function(e) {
	var chkbox = $(this).find('input');
	var val = chkbox.val().trim();
	var txt = chkbox.parent().text().trim();
	var txtObj = $('#' + selectedTxt);
	var valObj = $('#' + selectedVal);
	
	if (chkbox.is(':checked')) {