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Querying data by joining two tables in two database on different servers
...NER JOIN [DB2].[MyDatabaseOnDB2].[dbo].[MyOtherTable] tab2
ON tab1.ID = tab2.ID
Once the link is established, you can also use OPENQUERY to execute a SQL statement on the remote server and transfer only the data back to you. This can be a bit faster, and it will let the remote server opti...
What are the differences between numpy arrays and matrices? Which one should I use?
...n is not preserved in reduce operations. Matrices are always 2d, while the mean of an array, for example, has one dimension less.
For example demean rows of a matrix or array:
with matrix
>>> m = np.mat([[1,2],[2,3]])
>>> m
matrix([[1, 2],
[2, 3]])
>>> mm = m.m...
How do Trigonometric functions work?
...the same error, you can get away with one fewer term with Chebyshev, which means faster performance)
Range reduction is a huge win. This is because the contribution of higher order polynomials shrinks down when the interval of the approximation is smaller.
If you can't get away with range reduction,...
Git - Difference Between 'assume-unchanged' and 'skip-worktree'
...unchanged assumes that a developer shouldn’t change a file. This flag is meant for improving performance for not-changing folders like SDKs.
--skip-worktree is useful when you instruct git not to touch a specific file ever because developers should change it. For example, if the main repository u...
What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...ced the fact that the method addPreferencesFromResource(int preferencesResId) is marked deprecated in Android's documentation ( Reference Entry ).
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Copying a HashMap in Java
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@Thomio I mentioned that, that's what "shallow copy" means, If you need a deep copy to have to loop over the map and copy what you need.
– ratchet freak
Mar 18 '18 at 22:55
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Android Camera Preview Stretched
I've been working on making my custom camera activity on Android, but when rotating the camera, the aspect ratio of the surface view gets messed up.
...
What is difference between MVC, MVP & MVVM design pattern in terms of coding c#
... yes as long as it has a reference to view. i got it wrong i thought you meant view doesnt even need to call a presenter initially while it should at least one time. thanks ;)
– Amir Ziarati
Dec 13 '16 at 7:39
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Get value of dynamically chosen class constant in PHP
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$id = constant("ThingIDs::$thing");
http://php.net/manual/en/function.constant.php
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Questions every good Java/Java EE Developer should be able to answer? [closed]
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Well, the parameter n is declared as final, which means it can't be reassigned in the test method body. It doesn't cause an error because the method test doesn't attempt to reassign the parameter, it merely sets a property on the parameter... n = new Name("test"); would c...