大约有 40,000 项符合查询结果(耗时:0.0601秒) [XML]

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How to print the full NumPy array, without truncation?

...ld instead of a.size <= _summaryThreshold, and np.nan returns False for all >/</>=/<= comparisons. 'nan' only happens to work due to fragile implementation details of Python 2's mixed-type comparison logic; it breaks completely on Python 3. – user2357112 supports...
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Unique constraint on multiple columns

...ied from technet's documentation, is in the form of: CONSTRAINT constraint_name UNIQUE [ CLUSTERED | NONCLUSTERED ] ( column [ ASC | DESC ] [ ,...n ] ) Therefore, the resuting table definition would be: CREATE TABLE [dbo].[user]( [userID] [int] IDENTITY(1,1) NOT NULL, [fcode] [int] ...
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Which @NotNull Java annotation should I use?

... with each others' @NotNull / @NonNull / @Nonnull annotation and listing all of them in my code would be terrible to read. Any suggestions of which one is the 'best'? Here is the list of equivalent annotations I've found: ...
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What is the difference between exit(0) and exit(1) in C?

...ccessful program termination & it is fully portable, While exit(1) (usually) indicates unsucessful termination. However, it's usage is non-portable. Note that the C standard defines EXIT_SUCCESS and EXIT_FAILURE to return termination status from a C program. 0 and EXIT_SUCCESS are the values s...
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presentViewController:animated:YES view will not appear until user taps again

...ith presentViewController:animated:completion . What I'm making is essentially a guessing game. 8 Answers ...
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Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?

... @WouterLievens, overflow is normally an "unusual" condition, if not an outright error condition. It is a result of finite-precision math, which most people are not intuitively expecting to happen when they do math. In some cases, like -1 + 1, it's harmless;...
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Mean per group in a data.frame [duplicate]

... the many ways to specify the variables to act on. Here, vars(-Month) says all variables except Month. share | improve this answer | follow | ...
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How do I get Gridview to render THEAD?

...during postback and placed the code in the databound event which addressed all scenarios. – James Westgate Jun 10 '15 at 8:12 ...
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Select random row from a sqlite table

... the day seeded with unix epoc for today at noon so it shows the same book all day even if the query is run multiple times. Yes I know caching is more efficient for this use case just an example. – danielson317 Apr 22 at 17:18 ...
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Is there any publicly accessible JSON data source to test with real world data? [closed]

..., for example - A GET request to: https://api.twitter.com/1/statuses/user_timeline.json?include_entities=true&include_rts=true&screen_name=mralexgray&count=1, EDIT: Removed due to twitter restricting their API with OAUTH requirements... {"errors": [{"message": "The Twitter REST API...