大约有 44,000 项符合查询结果（耗时：0.0715秒） [XML]
Mongodb Explain for Aggregation framework
...rations
explain:true
db.collection.aggregate([
{ $project : { "Tags._id" : 1 }},
{ $unwind : "$Tags" },
{ $match: {$or: [{"Tags._id":"tag1"},{"Tags._id":"tag2"}]}},
{ $group: {
_id : "$_id",
count: { $sum:1 }
}},
{$sort: {"count":-1}}
],
{
explain:...
Change the image source on rollover using jQuery
...have a few images and their rollover images. Using jQuery, I want to show/hide the rollover image when the onmousemove/onmouseout event happen. All my image names follow the same pattern, like this:
...
Webview load html from assets directory
...is probably null.
public class ViewWeb extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
WebView wv;
wv = (WebView) findViewBy...
Check if a subview is in a view
...
You will end up with a code like :
Objective-C
- (IBAction)showPopup:(id)sender {
if(![self.myView isDescendantOfView:self.view]) {
[self.view addSubview:self.myView];
} else {
[self.myView removeFromSuperview];
}
}
Swift 3
@IBAction func showPopup(sender: AnyObj...
Compare if two variables reference the same object in python
...
While the two correct solutions x is z and id(x) == id(z) have already been posted, I want to point out an implementation detail of python. Python stores integers as objects, as an optimization it generates a bunch of small integers at its start (-5 to 256) and points...
Does IMDB provide an API? [closed]
...//www.imdb.com/xml/find?xml=1&nr=1&tt=on&q=lost
Format: XML
Upside: Supports both film titles and actor names (unlike Suggestions API).
Beware that these APIs are unofficial and could change at any time!
Update (January 2019): The Advanced API no longer exists. The good news is, t...
Positioning a div near bottom side of another div
...td">
<html><body>
<div style='background-color: yellow; width: 70%;
height: 100px; position: relative;'>
Outer
<div style='background-color: green;
position: absolute; left: 0; width: 100%; bottom: 0;'>
<div style='background-...
Why do we need private subnet in VPC?
...including those with only private IP addresses, to directly access S3 from selected subnets within the VPC, without touching "the Internet," and without using a NAT instance or NAT gateway, but this does require additional configuration, and is only usable to access buckets within the same AWS regio...
How can I have lowercase routes in ASP.NET MVC?
...rd by setting LowercaseUrls property of RouteCollection:
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.LowercaseUrls = true;
routes.MapRoute(
name: "Default",
url: "{control...
How to move an iFrame in the DOM without losing its state?
...show that even using native JavaScript the iFrames still reload:
http://jsfiddle.net/pZ23B/
var wrap1 = document.getElementById('wrap1');
var wrap2 = document.getElementById('wrap2');
setTimeout(function(){
document.getElementsByTagName('body')[0].appendChild(wrap1);
},10000);
...