大约有 42,000 项符合查询结果(耗时:0.0980秒) [XML]

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Use of Application.DoEvents()

...same kind of wisdom as "don't mutate a struct". Erm, why does the runtime and the language supports mutating a struct if that's so bad? Same reason: you shoot yourself in the foot if you don't do it right. Easily. And doing it right requires knowing exactly what it does, which in the case of DoE...
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Find a string by searching all tables in SQL Server Management Studio 2008

... If you are like me and have certain restrictions in a production environment, you may wish to use a table variable instead of temp table, and an ad-hoc query rather than a create procedure. Of course depending on your sql server instance, it m...
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What does it mean to “program to an interface”?

I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this? 32 Answers ...
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What is the best way to implement “remember me” for a website? [closed]

...in with Remember Me checked, a login cookie is issued in addition to the standard session management cookie. The login cookie contains a series identifier and a token. The series and token are unguessable random numbers from a suitably large space. Both are stored together in a database table, the t...
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What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos

... The quick and dirty first pass solution is always a great one to start with, as a comparison if nothing else. Greedy placement from large to small. Put the largest rectangle remaining into your packed area. If it can't fit anywhere, ...
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Long vs Integer, long vs int, what to use and when?

Sometimes I see API's using long or Long or int or Integer , and I can't figure how the decision is made for that? ...
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HTTP vs HTTPS performance

Are there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it? ...
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Missing file warnings showing up after upgrade to Xcode 4

...ing some warnings that I did not get before. I have looked through forums and other SO posts but have not come across how to fix this. ...
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How to optimize for-comprehensions and loops in Scala?

...imizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catch is expensive. But since such nested returns are rare in Scala programs, the optimizer did not yet address this case. There is work going on to improve the optimizer which hopefully will solve this issue soon. ...
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SSH to Elastic Beanstalk instance

...y Group In the AWS console, open the EC2 tab. Select the relevant region and click on Security Group. You should have an elasticbeanstalk-default security group if you have launched an Elastic Beanstalk instance in that region. Edit the security group to add a rule for SSH access. The below will l...