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Checking if an instance's class implements an interface?
...possible to determine if it implements a particular interface? As far as I know, there isn't a built-in function to do this directly. What options do I have (if any)?
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What's the Hi/Lo algorithm?
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The basic idea is that you have two numbers to make up a primary key- a "high" number and a "low" number. A client can basically increment the "high" sequence, knowing that it can then safely generate keys from the entire range of the previous "high" value with the variety ...
What is the difference between “ is None ” and “ ==None ”
...ree to implement
comparison any way it chooses, and it
can choose to make comparison against
None mean something (which actually
makes sense; if someone told you to
implement the None object from
scratch, how else would you get it to
compare True against itself?).
Practically-speakin...
“unadd” a file to svn before commit
...mitted changes. Once you've reverted, Subversion provides no way to get back those uncommitted changes.
http://svnbook.red-bean.com/en/1.7/svn.ref.svn.c.revert.html
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Vagrant reverse port forwarding?
I'm working on a web services architecture. I've got some software that I need to run on the native host machine, not in Vagrant. But I'd like to run some client services on the guest.
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Nodejs - Redirect url
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Chetan SChetan S
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程序员保值的4个秘密 - 杂谈 - 清泛网 - 专注C/C++及内核技术
... Android 内核，能够熟练撰写各种驱动，那找个月薪五六十K的工作不成问题，百八十K都不在话下。惟其稀缺，所以保值。
算法
大部分程序员其实不懂算法，都是用框架里的模块拼积木。如果你妙悟算法真谛，那你就超越了90%...
Release generating .pdb files, why?
... address-level debugging. Optimizations really do a number on your code, making it very difficult to find the culprit if something goes wrong (say, an exception is thrown). Even setting breakpoints is extremely difficult, because lines of source code cannot be matched up one-to-one with (or even in ...
Protecting Java Source Code From Being Accessed [closed]
Last week, I had to create a little GUI for homework.
None of my school mates did it. They have stolen my one from where we had to upload it and then they uploaded it again as theirs. When I told my teacher it was all my work he did not believe me.
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Application_Error not firing when customerrors = “On”
... Answer:
I figured out why the Application_Error() method is not being invoked...
Global.asax.cs
public class MvcApplication : System.Web.HttpApplication
{
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute()); // this li...