大约有 45,000 项符合查询结果(耗时:0.0621秒) [XML]

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Java Programming - Where should SQL statements be stored? [closed]

...tch from DB server without the need to change your model (but ask yourself now: how often would a company switch from DB server? likely at least only once per 3 years, isn't it?). I won't call stored procedures a "good" solution for this. They have an entirely different purpose. Even though, your c...
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Is std::vector so much slower than plain arrays?

...d::vector<Pixel> pixels(dimensions * dimensions, Pixel(255,0,0)); Now doing the same timing again: g++ -O3 Time.cpp -I <MyBoost> ./a.out UseVector completed in 2.216 seconds The vector now performance only slightly worse than the array. IMO this difference is insignificant...
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How to take all but the last element in a sequence using LINQ?

... I don't know a Linq solution - But you can easily code the algorithm by yourself using generators (yield return). public static IEnumerable<T> TakeAllButLast<T>(this IEnumerable<T> source) { var it = source.Get...
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Hidden features of Eclipse [closed]

...y = new | and then I pushed Ctrl-Space to complete the constructor call. Now I type: new Display()| and press Ctrl-2 L, which results in: Display display = new Display()| This really speeds things up. (Ctrl-2 F does the same, but assigns to a new field rather than a new variable.) Another g...
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Disable Interpolation when Scaling a

... interpolation when scaling elements? The answer is maybe some day. For now, you'll have to resort to hack-arounds to get what you want. image-rendering The working draft of CSS3 outlines a new property, image-rendering that should do what I want: The image-rendering property provides a h...
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how do i remove a comma off the end of a string?

I want to remove the comma off the end of a string. As it is now i am using 10 Answers ...
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JavaScript data grid for millions of rows [closed]

... (Disclaimer: I am the author of SlickGrid) UPDATE This has now been implemented in SlickGrid. Please see http://github.com/mleibman/SlickGrid/issues#issue/22 for an ongoing discussion on making SlickGrid work with larger numbers of rows. The problem is that SlickGrid does not virtu...
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How does the Brainfuck Hello World actually work?

...memory looks like: ...[0][0][*97*][0][0]... If you use dot (.) operator now, what BF does is print: a Because a decimal code in ASCII is 97. So for example BF program like this (97 pluses 2 dots): +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++...
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What is the difference between include and extend in Ruby?

...class (i.e. the singleton class) e.g. if you call Klazz.extend(Mod), now Klazz has Mod's methods (as class methods) if you call obj.extend(Mod), now obj has Mod's methods (as instance methods), but no other instance of of obj.class has those methods added. extend is a public method include -...
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Why is January month 0 in Java Calendar?

...ng what's wrong with it would take a very long time (and I'm sure I don't know half of the problems). Admittedly working with dates and times is tricky, but aaargh anyway. Do yourself a favour and use Joda Time instead, or possibly JSR-310. EDIT: As for the reasons why - as noted in other answers,...