大约有 48,000 项符合查询结果（耗时：0.0810秒） [XML]
How do ACID and database transactions work?
...
ACID is a set of properties that you would like to apply when modifying a database.
Atomicity
Consistency
Isolation
Durability
A transaction is a set of related changes which is used to achieve some of the ACID properties. Transactions are tools to achieve the ACID proper...
Why does the 260 character path length limit exist in Windows?
...r nonsense. Microsoft doesn't want to break the millions of poorly written applications out there that assume things about the system that were never guaranteed. Unfortunately, things were the same way for so long that developers came to rely on them, so changing it now would break 3rd party applica...
Why is creating a new process more expensive on Windows than Linux?
...quires a compatbility shim, checking whether software restriction policies apply, yada yada.
That said, I see the overall slowdown in the sum of all those little things that have to be done in addition to the raw creation of a process, VA space, and initial thread. But as said in the beginning -- d...
When is layoutSubviews called?
... Oct 21 '13 at 7:09
Patrick PijnappelPatrick Pijnappel
6,0173535 silver badges3939 bronze badges
...
List of installed gems?
...
Gem::Specification.map {|a| a.name}
However, if your app uses Bundler it will return only list of dependent local gems. To get all installed:
def all_installed_gems
Gem::Specification.all = nil
all = Gem::Specification.map{|a| a.name}
Gem::Specification.reset
...
C# Events and Thread Safety
...sory performance testing to see the impact of the subscribe-empty-delegate approach, and here are my results:
Executing 50000000 iterations . . .
OnNonThreadSafeEvent took: 432ms
OnClassicNullCheckedEvent took: 490ms
OnPreInitializedEvent took: 614ms <--
Subscribing an empty delegate to...
Code-first vs Model/Database-first [closed]
...ecause hardcore programmers don't like any kind of designers and defining mapping in EDMX xml is too complex.
Full control over the code (no autogenerated code which is hard to modify).
General expectation is that you do not bother with DB. DB is just a storage with no logic. EF will handle creation...
Is it possible to import a whole directory in sass using @import?
...ies can REDUCE complexity.
My organization's project is a rather complex app. There are 119 Sass files in 17 directories. These correspond roughly to our views and are mainly used for adjustments, with the heavy lifting being handled by our custom framework. To me, a few lines of imported director...
NHibernate vs LINQ to SQL
...t your domain running based on an existing database structure. For simple applications, this is perfectly acceptable (and oftentimes even preferable), but for more complex applications devs will often suggest using a domain driven design pattern instead (which is what NHibernate facilitates).
The ...
How to get the groups of a user in Active Directory? (c#, asp.net)
...or each loop iteration in the result
It contains bugs which can cause your application to stop working 'some day' when groups and users are evolving. Microsoft recognized the issue and is related with some SID's. The error you'll get is "An error occurred while enumerating the groups"
Therefore, I...