大约有 16,000 项符合查询结果(耗时:0.0269秒) [XML]

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UDP vs TCP, how much faster is it? [closed]

... might do to implement reliability can end up being slower than what TCP already does. Now you're network-unfriendly, which can cause problems in shared environments. Most importantly, firewalls will block you. You can potentially overcome some TCP performance and latency issues by "trunking" mult...
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What should I do if the current ASP.NET session is null?

In my web application, I do something like this to read the session variables: 5 Answers ...
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Best way to select random rows PostgreSQL

... table and then picks the first 1000 items. Sorting a large table not only reads that table but also involves reading and writing temporary files. The where random() < 0.1 only scans the complete table once. For large tables this might not what you want as even one complete table scan might take...
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What is PECS (Producer Extends Consumer Super)?

I came across PECS (short for Producer extends and Consumer super ) while reading up on generics. 14 Answers ...
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What should be in my .gitignore for an Android Studio project?

... Building on my normal Android .gitignore, and after reading through documentation on the Intellij IDEA website and reading posts on StackOverflow, I have constructed the following file: # built application files *.apk *.ap_ # files for the dex VM *.dex # Java class files *....
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The JPA hashCode() / equals() dilemma

... Read this very nice article on the subject: Don't Let Hibernate Steal Your Identity. The conclusion of the article goes like this: Object identity is deceptively hard to implement correctly when objects are persisted t...
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What are dictionary view objects?

...? Is that faster, slower ? More memory efficient ? Restricted ? If you can read and edit it, it feels exactly the same as having a reference to this list. – e-satis Jan 22 '12 at 13:01 ...
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Flask-SQLalchemy update a row's information

...(see sqlalchemy.org/docs/orm/session.html#what-does-the-session-do). Also, read Michael Bayer's comment on the mailing list (groups.google.com/group/sqlalchemy/browse_thread/thread/…) for some more info. – Mark Hildreth Jul 15 '11 at 15:28 ...
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Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT

...l int takeFlags = data.getFlags() & (Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION); // Check for the freshest data. getContentResolver().takePersistableUriPermission(originalUri, takeFlags); } loadSomeStre...
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'

...omething valuable. -- Besides, I dare disagree with you on auto_ptr: After reading Herb Sutter's Exceptional C++ it seems like a very useful class when implementing the RAII pattern. – stakx - no longer contributing May 2 '10 at 10:29 ...