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How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?
... modify the project file. To do so right click on the unloaded project and select Edit. Which will open the project file as an XML text file. Find the ProjectTypeGuids node which should look something like this:
<ProjectTypeGuids>
{F85E285D-A4E0-4152-9332-AB1D724D3325};{349c5851-65df-11da...
SQL Server IN vs. EXISTS Performance
...execution operation, to get their results.
An example:
Query 1 ( plan )
select * from dt where dt.customer in (select c.code from customer c where c.active=0)
Query 2 ( plan )
select * from dt where exists (select 1 from customer c where c.code=dt.customer and c.active=0)
...
Generate .pem file used to set up Apple Push Notifications
...rtificates" on the left navigation bar. Then, click "+" button.
Step 2: Select Apple Push Notification service SSL (Production) option under Distribution section, then click "Continue" button.
Step 3: Select the App ID you want to use for your BYO app (How to Create An App ID), then click "Con...
How to view DLL functions?
...
You may try the Object Browser in Visual Studio.
Select Edit Custom Component Set. From there, you can choose from a variety of .NET, COM or project libraries or just import external dlls via Browse.
...
commands not found on zsh
...the file.
After saving the file, change the /bin/zsh in your command or select default
...and restart terminal and you should have your zsh shell working again!
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SQL Server add auto increment primary key to existing table
... tablename, and tablekey ):
UPDATE x
SET x.<Id> = x.New_Id
FROM (
SELECT <Id>, ROW_NUMBER() OVER (ORDER BY <tablekey>) AS New_Id
FROM <tablename>
) x
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关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...连接的模型都应该被称为多路复用，目前比较常用的有 select/poll/epoll/kqueue 这些 IO 模型（目前也有像 Apache 这种每个连接用单独的进程/线程来处理的 IO 模型，但是效率相对比较差，也很容易出问题，所以暂时不做介绍了）。在...
Eclipse error: indirectly referenced from required .class files?
...nfigured project)
Remove the "JRE System Library"
Hit "Add Library ...", Select "JRE System Library" and add the appropriate JRE for the project (eg. 'Workspace default JRE')
Hit "Finish" in the library selection and "OK" in the project properties and then wait for the re-build of the project
Ho...
Dynamic type languages versus static type languages
...o override the static checker. For most languages, these take the form of casting, though some (like C# and Haskell) have entire modes which are marked as "unsafe".
Subjectively, I like static typing. Implemented properly (hint: not Java), a static type system can be a huge help in weeding out er...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...t = connection.createStatement();
statement.executeQuery("select * from moobar");
//This SQL is correctly formed, yet it throws the
//'transaction is aborted' SQL Exception, why? Because:
//A. you were in a transaction.
//B. You ran a SQL stateme...