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Entity Framework rollback and remove bad migration
I'm using EF 6.0 for my project in C# with manual migrations and updates. I have about 5 migrations on the database, but I realised that the last migration was bad and I don't want it. I know that I can rollback to a previous migration, but when I add a new (fixed) migration and run Update-Database,...
Find the Smallest Integer Not in a List
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If the datastructure can be mutated in place and supports random access then you can do it in O(N) time and O(1) additional space. Just go through the array sequentially and for every index write the value at the index to the index specified by value, recursively placin...
Effects of the extern keyword on C functions
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We have two files, foo.c and bar.c.
Here is foo.c
#include <stdio.h>
volatile unsigned int stop_now = 0;
extern void bar_function(void);
int main(void)
{
while (1) {
bar_function();
stop_now = 1;
}
return 0;
}
Now, here is...
How to deploy an ASP.NET Application with zero downtime
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You need 2 servers and a load balancer. Here's in steps:
Turn all traffic on Server 2
Deploy on Server 1
Test Server 1
Turn all traffic on Server 1
Deploy on Server 2
Test Server 2
Turn traffic on both servers
Thing is, even in this case yo...
ADT requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found
I'm installing the Android SDK on a fresh installation of Fedora 14 (Linux). I installed eclipse, and ran the tools/android sdk tool to install all the Eclipse components for the SDK. I was able to get DDMS to install when selecting it by itself.
...
Why does Iterable not provide stream() and parallelStream() methods?
... am wondering why the Iterable interface does not provide the stream() and parallelStream() methods. Consider the following class:
...
IIS_IUSRS and IUSR permissions in IIS8
...ser Account
Right-click the domain when it appears under the Sites list, and choose Edit Permissions
Under the Security tab, you will see MACHINE_NAME\IIS_IUSRS is listed. This means that IIS automatically has read-only permission on the directory (e.g. to run ASP.Net in the site). You do not...
Emacs on Mac OS X Leopard key bindings
I'm a Mac user and I've decided to learn Emacs. I've read that to reduce hand strain and improve accuracy the CTRL and CAPS LOCK keys should be swapped. How do I do this in Leopard?
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
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NOTE: PyPy is more mature and better supported now than it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information.
PyPy, as others have been quick to mention, has tenuous support for C extensions. It has...
C# Object Pooling Pattern implementation
... the base class library (BCL). You can read the original GitHub issue here and view the code for System.Buffers. Currently the ArrayPool is the only type available and is used to pool arrays. There is a nice blog post here.
namespace System.Buffers
{
public abstract class ArrayPool<T>
...