大约有 30,000 项符合查询结果(耗时:0.0695秒) [XML]

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Non-Relational Database Design [closed]

...HTML. (HUGE!!) For normal webapps, document/JSON-based DBs are a massive win, and the drawbacks of less flexible queries and some extra code for data validation seems a small price to pay. Have you hit your head against anything that seems impossible? Not yet. Map/reduce as a means of querying a...
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Git vs Team Foundation Server [closed]

.... If the argument for TFS in your organization is that it works better on Windows than Git, I'd suggest Mercurial, which works great on Windows -- there's integration with Windows Explorer (TortoiseHg) and Visual Studio (VisualHg). ...
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What optimizations can GHC be expected to perform reliably?

...y the same, not the same by value. For example, CSE won't fire in the following code without a bunch of inlining: x = (1 + (2 + 3)) + ((1 + 2) + 3) y = f x z = g (f x) y However, if you compile via llvm, you may get some of this combined, due to its Global Value Numbering pass. Liberate case Thi...
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Optimizing away a “while(1);” in C++0x

...a potentially non-terminating loop. For example, assume we have the following loops, where count and count2 are global variables (or have had their address taken), and p is a local variable, whose address has not been taken: for (p = q; p != 0; p = p -> next) { ++count; } for (p = q; p...
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What should main() return in C and C++?

...ain CAN be entered/left multiple times, but that program probably wouldn't win any design awards ;) – korona Oct 15 '08 at 12:38 14 ...
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Troubleshooting “Illegal mix of collations” error in mysql

...ows you to specify the collation used in the query. For example, the following WHERE clause will always give the error you posted: WHERE 'A' COLLATE latin1_general_ci = 'A' COLLATE latin1_general_cs Your solution is to specify a shared collation for the two columns within the query. Here is an e...
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Should I use tag for icons instead of ? [closed]

...t day to learn twitter's bootstrap and it feels bad that they are not following best practices. – Jashwant Jun 21 '12 at 9:35 25 ...
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Determining complexity for recursive functions (Big O notation)

...4, even though the result is the same, shouldn't the induction be the following? T(n) = a + 2T(n-1) = a + 2a + 4T(n-1) = 3a + 4a + 8T(n-1) = a * (2^n - 1) + 2^n * T(0) = a * (2^n - 1) + b * 2^n = (a + b) * 2^n - a = O(2^n) – Snowfish Jan 3 at 22:59 ...
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The case against checked exceptions

... number of years now I have been unable to get a decent answer to the following question: why are some developers so against checked exceptions? I have had numerous conversations, read things on blogs, read what Bruce Eckel had to say (the first person I saw speak out against them). ...
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How can I pair socks from a pile efficiently?

...ent than a modern CPU, this question makes no practical sense. Humans can win over CPU algorithms using the fact that "finding a matching pair" can be one operation for a set that isn't too big. My algorithm: spread_all_socks_on_flat_surface(); while (socks_left_on_a_surface()) { // Thanks t...