代码示例讲述了这个问题的故事。。
我期望这些操作表现为“正常”引用类型实例。
using System;
public class Program
{
static Action action1;
static Action action2;
public static void Main()
{
// the Both method goes to both action1 and action2
// that is what I expected
action1 = Both;
action
我正在学习react & redux。我想找出这两个代码之间的区别。
export default function xReducer (state = [], action) {
switch (action.type) {
// I am simply assigning my key value to the action property
case 'SOMETHING': {
return [ ...state, { myKey: action.x } ]
}
/
我收到一个错误
Started POST "/actions" for 127.0.0.1 at 2012-10-29 15:04:01 +0600
Processing by ActionsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"lfHYF3EQn1/lMReK3alX3NsGa4wSMejC/0fEeoAFYUY=", "commit"=>"Create A
我试图跟踪android上的多点触摸事件(我需要跟踪每个手指的“触下”和“触摸”)。问题是PointerId似乎不一致,或者我在将“向下”事件链接到“向上”事件时遇到了问题,因此我错过了一些“向上”事件。
下面是我用来处理MotionEvents的代码:
int pointerIndex = me.getActionIndex();
int pointerId = me.getPointerId(pointerIndex);
final int action = me.getActionMasked();
switch (action)
{
case MotionEvent.ACTION_P
我知道"live“函数现在被弃用了。如何迁移以下内容以使用新的"on"?
$('a.action').live( "click", function (evt) {
// Do stuff
}
场景是a.action是在运行中创建的。我试过了,但没有用:
$('a.action').on( "click", function (evt) {
// Do stuff
}