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jQuery fading/dimming other list elements when one is hovered over, I'm 90% there..?

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问题 I have an unordered list, which has maybe 30 items. When one of these items are hovered over, the rest of the list items fade to 30% and the hovered item stays at 100%; when you move away from the list, they all fade back up to 100% and I have managed this. My problems arises when you move from item to item, the other list items fade back up to 100% and then back down to 30%. I want them to stay at 30% unless the user moves away from the whole list. I use the hoverIntent plugin on each list

Shell: How to use screen and wait for a couple of background processes in a shell script

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问题 I am writing a shell script for a couple of long running processes. First of all I need to run all commands in the screen session manager, so that the execution of a process does not end if a user has been disconnected. Later I need wait for some background processes, which has been created before, to end, so that the following process can start. My question is how to start a screen session in a shell script and wait for the background processes to end. 回答1: You can't invoke screen (or nohup

check if a button is available? if not wait 5 seconds and check again?

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问题 Basically I'm trying to see if a button is able to be clicked at the moment. If not I would like to try again. So I need some kind of a goto function to return to an earlier line of my code. Although I suspect I written this extremely poorly and it could have been done much easier. try { driver.findElement(By.xpath("//button[@id='btn_ok']")).click(); }catch (Exception e) { driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS); } for context, here is the button culprit in question.

I used wait(&status) and the value of status is 256, why?

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问题 I have this line in my code : t = wait(&status); When the child process works, the value of status is 0, well. But why does it return 256 when it doesn't work? And why changing the value of the argument given to exit in the child process when there is an error doesn't change anything (exit(2) instead of exit(1) for example)? Thank you Edit : I'm on linux, and I compiled with GCC. I defined status like this int status; t = wait(&status); 回答1: Given code like this... int main(int argc, char *

How do I get hibernate to generate Oracle's FOR UPDATE WAIT 10 syntax

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问题 I have a line of code like this: final Foo foo = (Foo)session.get( Foo.class, id, LockMode.UPGRADE ); This generates a SELECT .. FOR UPDATE . However, I'm only willing to wait for 10 seconds to obtain the lock and there for I would like a SELECT .. FOR UPDATE WAIT 10 . How can I get hibernate to generate this? 回答1: The answer is to use the LockOptions class with SetTimeout() rather than LockMode. For this, we upgraded to Hibernate 3.6 only to find it is broken for Oracle. 回答2: AFAIK, you can

线程间通信

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1.轮询机制通过不断访问共享对象的状态，来判断是否满足了线程执行要求定义操作类MyObject，内部有一个volatile关键字修饰的list成员变量，使用volatile主要是为了让操作类对象的改变可以让每个线程都能感应到。代码如下： package com.feng.example; import java.util.ArrayList; import java.util.List; public class MyObject { //此处必须是volatile，否则线程B中的object感应不到线程A中的object的变化 volatile private List<String> list = new ArrayList<String>(); public void add() { list.add("hahaha"); } public int size(){ //System.out.println("hahah"); return list.size(); } } 定义两个线程类MyThreadA 用于向MyObject对象中添加数据，MyThreadB用于在list中存在大于等于五个元素时退出代码如下： package com.feng.example; public class MyThreadA extends Thread{ private

How to use wait and notify protocol with multiple threads

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问题 Specifically, can somebody tell me what is wrong with this piece of code. It should start the threads, so should print "Entering thread.." 5 times and then wait until notifyAll() is called. But, it randomly prints "Entering.." and "Done.." and still keeps waiting on others. public class ThreadTest implements Runnable { private int num; private static Object obj = new Object(); ThreadTest(int n) { num=n; } @Override public void run() { synchronized (obj) { try { System.out.println("Entering

jQuery, display loading page div only if the page takes more than 2 seconds to load

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问题 This is my first question, so hopefully I will give enough details. I have the following code in 4 pages on a website: $(document).ready(function() { $('#page_loading').slideDown(500); }); jQuery(window).load(function () { setTimeout(function() {$('#page_loading').slideUp(500);}, 1500); }); What I am I trying to achieve: When browsing thorough the 4 pages, have the #page_loading div slide down only if the page takes more than 2 seconds to load. If the pages takes less than 2 seconds to load

webdriver wait for one of a multiple elements to appear

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问题 Is there a way to get a webDriverWait to wait for one of a number of elements to appear and to act accordingly based on which element appears? At the moment I do a WebDriverWait within a try loop and if a timeout exception occurs I run the alternative code which waits for the other element to appear. This seems clumsy. Is there a better way? Here is my (clumsy) code: try: self.waitForElement("//a[contains(text(), '%s')]" % mime) do stuff .... except TimeoutException: self.waitForElement("//li

Batch Script to wait for program to close by user before applying msi update

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I'm using a network management tool to apply updates to software and I have an issue where if a users is already using the program you want to update the update will fail as you would expect. I have been trying to put together a batch script that will detect whether the the program is running and if it is the script will wait until the user closes down the program and the apply the msi update. I've pretty much scoured google but can only really find previous scripts that kill the program first before proceeding and I don't want that to happen as the user may lose work. Hope someone can help!