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What's the difference between “groups” and “captures” in .NET regular expressions?
... a "capture" are when it comes to .NET's regular expression language. Consider the following C# code:
5 Answers
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Wrong requestCode in onActivityResult
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Because it should decide which fragment will deliver the result to . So when The Fragment call StartActivityForResult. the requestCode will be changed by the Activity, so it will know how to deliver the result to which fragment. if you really...
iPhone - Grand Central Dispatch main thread
...nd queue to signal that some background processing has finished e.g.
- (void)doCalculation
{
//you can use any string instead "com.mycompany.myqueue"
dispatch_queue_t backgroundQueue = dispatch_queue_create("com.mycompany.myqueue", 0);
dispatch_async(backgroundQueue, ^{
int res...
Output array to CSV in Ruby
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@David it's the file mode. "w" means write to a file. If you don't specify this, it'll default to "rb" (read-only binary mode) and you would get an error when trying to add to your csv file. See ruby-doc.org/core-1.9.3/IO.html fo...
Keyboard shortcuts with jQuery
...nce and they are expecting that behavior within the web app (and maybe provide a setting for them to change it)... otherwise it's incredibly annoying. Example 1: When composing a post on Stack Exchange and instead of hiding the browser, Cmd H makes ## Heading ## appear in the text field. Example 2: ...
App Inventor 2 手势识别扩展教程 - GestureDetector · App Inventor 2 中文网
...en GestureDetector1.OnDoubleTap(X, Y) {
if (是否放大) {
图像1.WidthPercent = 90
图像1.Height = -1 // Auto
global 是否放大 = false
} else {
图像1.WidthPercent = 200
图像1.HeightPercent = 200
global 是否放大 = true
}
}
when GestureDetector1.OnLongPres...
Get the client's IP address in socket.io
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for 1.0.4:
io.sockets.on('connection', function (socket) {
var socketId = socket.id;
var clientIp = socket.request.connection.remoteAddress;
console.log(clientIp);
});
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How do I fire an event when a iframe has finished loading in jQuery?
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Have you tried:
$("#iFrameId").on("load", function () {
// do something once the iframe is loaded
});
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TypeError: ObjectId('') is not JSON serializable
...er querying an aggregated function on document using Python, It returns valid response and i can print it but can not return it.
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How does this giant regex work?
...)'s the code in the next parameter. In fact this is a way for someone to hide code. The following proof that this is a backdoor, and you must remove it immediately. Your system maybe compromised further.
This is what the backdoor looks like when it is accessed:
the hex part of the code:
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