大约有 45,000 项符合查询结果(耗时:0.0779秒) [XML]

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what is the difference between OLE DB and ODBC data sources?

...g to happen for a number of reasons, such as: The world was not going to convert to Microsoft technologies and away from ODBC; DAO/ODBC was faster than ADO/OLE DB and was also thoroughly integrated into MS Access, so wasn’t going to die a natural death; New technologies that were being developed...
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How many socket connections can a web server handle?

... virtual or dedicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP. ...
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To underscore or to not to underscore, that is the question

...nguages? For example since C# is case-sensitive you can call a field "foo" and the public property "Foo" and it works fine. ...
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Why do we need tuples in Python (or any immutable data type)?

... if I must convert a tuple to a set or list to be able to sort them, what's the point of using a tuple in the first place? In this particular case, there probably isn't a point. This is a non-issue, because this isn't one of the cases...
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Why does the MongoDB Java driver use a random number generator in a conditional?

...he following code in this commit for MongoDB's Java Connection driver , and it appears at first to be a joke of some sort. What does the following code do? ...
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Why does 'continue' behave like 'break' in a Foreach-Object?

...re is a gotcha to be kept in mind when refactoring. Sometimes one wants to convert a foreach statement block into a pipeline with a ForEach-Object cmdlet (it even has the alias foreach that helps to make this conversion easy and make mistakes easy, too). All continues should be replaced with return....
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Use numpy array in shared memory for multiprocessing

...he multiprocessing module. The difficulty is using it like a numpy array, and not just as a ctypes array. 5 Answers ...
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Javascript calculate the day of the year (1 - 366)

...)); Which outputs for the leap year 2016 (verified using http://www.epochconverter.com/days/2016): 1/1/2016 is 1 days into the year 2/1/2016 is 32 days into the year 3/1/2016 is 61 days into the year 6/1/2016 is 153 days into the year 12/31/2016 is 366 days into the year ...
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Is it good practice to make the constructor throw an exception? [duplicate]

...ke the constructor throw an exception? For example I have a class Person and I have age as its only attribute. Now I provide the class as ...
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What Are the Differences Between PSR-0 and PSR-4?

...k for Acme\Foo\Bar in src/Bar.php(where Bar class is). 2. PSR-4 does not convert underscores to directory separators 3. You would prefer using PSR-4 with namespaces 4. PSR-0 will not work even if the class name is different from file name, like considering above example: Acme\Foo\Bar --->...