大约有 48,000 项符合查询结果(耗时:0.0752秒) [XML]

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Difference between numpy.array shape (R, 1) and (R,)

...bine or even expand them. M=np.arange(9).reshape(3,3) M[:,0].shape # (3,) selects one column, returns a 1d array M[0,:].shape # same, one row, 1d array M[:,[0]].shape # (3,1), index with a list (or array), returns 2d M[:,[0,1]].shape # (3,2) In [20]: np.dot(M[:,0].reshape(3,1),np.ones((1,3))) Out...
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SQlite Getting nearest locations (with latitude and longitude)

... this seems to work cursor = db.getReadableDatabase().rawQuery("Select nome, id as _id, " + "( " + latitude + " - lat) * ( " + latitude +"- lat) + ( " + longitude + "- lon) * ( " + longitude + "- lon) * " + fudge + " as distanza " + " from cliente "+ " order by distanza asc", null); ...
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Entity Framework 4 vs NHibernate [closed]

...query, it can only load data from one table (So if you have Order.Product, SELECT * FROM order LEFT JOIN Product will initialize only Order object, Product will remain null, thought all necessary data is fetched in query to init it ). This can be overcome by using EFExtensions community add-on, but...
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showDialog deprecated. What's the alternative?

...rride public void onDateSet(DatePicker datepicker, int selectedyear, int selectedmonth, int selectedday) { ed_date.setText(new StringBuilder().append(year).append("-").append(month+1).append("-").append(day)); ...
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How to get first N elements of a list in C#?

... Except that you're now ordering only the first 5 elements after you've selected them. It may be faster, but it also has different semantics, which are less likely to be what people actually want to achieve. – Greg Beech Nov 26 '08 at 9:01 ...
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Why don't structs support inheritance?

...hat short[] can't be converted to int[] (short of conversion code, like 'a.Select(x => (int) x).ToArray()'). If the runtime disallowed the cast from Base to Derived, it would be a "wart", as that IS allowed for reference types. So we have two different "warts" possible -- forbid struct inherita...
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Fragment transaction animation: slide in and slide out

...iner); View list_container = findViewById(R.id.list_container); // You can select the direction left/right/up/down and the duration CustomAnimator.slide(list_container, details_container,CustomAnimator.DIRECTION_LEFT, 400); You can use the function CustomAnimator.reversePrevious();to get the previ...
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Threading in a PyQt application: Use Qt threads or Python threads?

...have you considered non-blocking I/O using Twisted or non-blocking sockets/select? EDIT: more on threads Python threads Python's threads are system threads. However, Python uses a global interpreter lock (GIL) to ensure that the interpreter is only ever executing a certain size block of byte-code...
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What's the difference between libev and libevent?

...es not understand how to resolve this problem. Second problem is using old select socket interface withour modern IOCP version of socket interoperation. Could you improve Widnows support? – Vitold S. Jan 3 '16 at 2:51 ...
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user authentication libraries for node.js?

... Among all auth packages for node I selected passport. It's well-documented and easy to use, and supports more strategies. – tech-man May 14 '12 at 4:16 ...