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How to make Java honor the DNS Caching Timeout?
We use GSLB for geo-distribution and load-balancing. Each service is assigned a fixed domain name. Through some DNS magic, the domain name is resolved into an IP that's closest to the server with least load. For the load-balancing to work, the application server needs to honor the TTL from DNS respo...
What is the most compatible way to install python modules on a Mac?
I'm starting to learn python and loving it. I work on a Mac mainly as well as Linux. I'm finding that on Linux (Ubuntu 9.04 mostly) when I install a python module using apt-get it works fine. I can import it with no trouble.
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How can I return an empty IEnumerable?
...ange things if he returned, say, new List<Friend>() since it will be cast to IEnumerable<Friend> when returned from that method?
– Sarah Vessels
Jul 12 '10 at 16:57
73
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How do I compile a Visual Studio project from the command-line?
I'm scripting the checkout, build, distribution, test, and commit cycle for a large C++ solution that is using Monotone , CMake , Visual Studio Express 2008, and custom tests.
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How can I make Array.Contains case-insensitive on a string array?
...ng case insensitivity into account) is at least possible like this, with a cast:
if ( ((IList<string>)mydotNet2Array).Contains(“str”) )
{}
As the Contains() method is part of the IList interface, this works not only with arrays, but also with lists, etc.
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iOS: Use a boolean in NSUserDefaults
...MainScreen()
}
alternatively we can use object(forKey:) then cast it to bool
if let exists = Defaults.object(forKey: "isLoggedIn"), let isLoggedIn = exists.boolValue where isLoggedIn == true {
displayMainScreen()
} else {
displayLoginScreen()
}
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String concatenation vs. string substitution in Python
...ou are profiling how. For one your concat is slow because you have two str casts in it. With strings the result is the opposite, since string concat is actually faster than all the alternatives when only three strings are concerned.
– Justus Wingert
Sep 16 '15 ...
Row count with PDO
... count($nRows); - count() is an array function :P. I'd also recommend type casting the result from fetchColumn() to an integer. $count = (int) $stmt->fetchColumn()
– Cobby
May 26 '11 at 23:59
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What is an Intent in Android?
... happen. Depending on the intent, apps or the OS might be listening for it and will react accordingly. Think of it as a blast email to a bunch of friends, in which you tell your friend John to do something, or to friends who can do X ("intent filters"), to do X. The other folks will ignore the email...
Node.js on multi-core machines
... must miss something - isn't Node.js tuned only to run on a single process and thread?
15 Answers
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