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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
cpuid汇编指令cpuid指令cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。 CPUID这条指令，除了用于识别CPU（CPU的型号...cpuid指令
cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...ntrary to this, so you'll want to
double-check with your target DBMS
before assuming all of this still holds.
I've been a Sybase ASE, MySQL, and SQL Server DBA on-and off since for almost a decade (along with application development in C, PHP, PL/SQL, C#.NET, and Ruby). So, I have no partic...
Python str vs unicode types
...ote: In Python 3, unicode was renamed to str and there is a new bytes type for a plain sequence of bytes.
Some differences that you can see:
>>> len(u'à') # a single code point
1
>>> len('à') # by default utf-8 -> takes two bytes
2
>>> len(u'à'.encode('utf-8'))
...
MySQL vs MongoDB 1000 reads
...corporate it into their codebase.
People are seeing real world MongoDB performance largely because MongoDB allows you to query in a different manner that is more sensible to your workload.
For example, consider a design that persisted a lot of information about a complicated entity in a normalised...
How to stop event bubbling on checkbox click
I have a checkbox that I want to perform some Ajax action on the click event, however the checkbox is also inside a container with it's own click behaviour that I don't want to run when the checkbox is clicked. This sample illustrates what I want to do:
...
Select count(*) from multiple tables
... is a table in oracle db's to which all accounts can access you can use it for common needs like: "SELECT sysdate FROM dual"
– dincerm
Mar 3 '09 at 12:47
5
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jQuery selectors on custom data attributes using HTML5
I would like to know what selectors are available for these data attributes that come with HTML5.
4 Answers
...
Unable to begin a distributed transaction
... -uninstall' will
result in the system losing all MS DTC configuration information.
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Running
msdtc -uninstall
msdtc -install
and then stopping and restarting SQL Server service fixed it.
...
How to save MailMessage object to disk as *.eml or *.msg file
...
For simplicity, I'll just quote an explanation from a Connect item:
You can actually configure the
SmtpClient to send emails to the file
system instead of the network. You can
do this programmatically using the
fo...
“Variable” variables in Javascript?
I know it's possible in PHP to have "variable" variables. For example
7 Answers
7
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