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How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
... pbsb.zip # can also do via graphical interface if you prefer.
What's inside zip
./app.js
const PORT = 3000;
const HOST = 'localhost';
var express = require('express');
var app = module.exports = express.createServer();
app.use(express.staticProvider(__dirname + '/public'));
const redis = re...
How to monitor the memory usage of Node.js?
...48, heapUsed: 4528072 }
> process.memoryUsage(); // Memory usage after idling
{ rss: 23293952, heapTotal: 11803648, heapUsed: 4753376 }
In this simple example, you can see that allocating an array of 10M elements consumers approximately 80MB (take a look at heapUsed).
If you look at V8's sourc...
How to Get the Title of a HTML Page Displayed in UIWebView?
...
For those who just scroll down to find the answer:
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSString *theTitle=[webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}
This will always work as there is no way to turn off Javascript in UIWebView.
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How to return a result (startActivityForResult) from a TabHost Activity?
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Oh, god! After spending several hours and downloading the Android sources, I have finally come to a solution.
If you look at the Activity class, you will see, that finish() method only sends back the result if there is a mParent property set to null. Otherwise the result is lost.
publi...
Best way to find the intersection of multiple sets?
...utput: set([1])
However, many Python programmers dislike it, including Guido himself:
About 12 years ago, Python aquired lambda, reduce(), filter() and map(), courtesy of (I believe) a Lisp hacker who missed them and submitted working patches. But, despite of the PR value, I think these featur...
Is there any “font smoothing” in Google Chrome?
...n the chrome board for this issue code.google.com/p/chromium/issues/detail?id=137692 it seems to be aimed as fix for v37, if I've undrestand correctly the last post in the thread.
– Gruber
May 12 '14 at 19:21
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Intercept page exit event
When editing a page within my system, a user might decide to navigate to another website and in doing so could lose all the edits they have not saved.
...
Why does Internet Explorer not send HTTP post body on Ajax call after failure?
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There does not seem to be a clear answer to this question, so I will provide my empirical data as a substitute and provide some ways to work around it. Maybe some MS insider will one day shed some light on this...
If HTTP Keep-Alive is disabled on the server, this issue goes away. In other words...
What's the difference between findAndModify and update in MongoDB?
... do I need to return the item first? I read the MongoDB: the definitive guide and it says that it is handy for manipulating queues and performing other operations that need get-and-set style atomicity. But I didn't understand how it achieves this. Can somebody explain this to me?
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Implementing slicing in __getitem__
...key) #Get the data from elsewhere
else:
raise TypeError, "Invalid argument type."
The slice doesn't return the same type, which is a no-no, but it works for me.
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