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What are the main performance differences between varchar and nvarchar SQL Server data types?
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@cbmeeks: I don't code for what I don't know. But if you can use it with no noticeable performance hit, then your databases aren't big enough for it to matter...
– gbn
Mar 7 '12 at 15:48
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How can I maximize a split window?
...ark A
You can avoid using a mark for normal (non-help) buffers. Let me know if you're interested.
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How should a model be structured in MVC? [closed]
...and view for a given request-response cycle.
Alteration of model's state
Now that you can access to the model layer in the controllers, you need to start actually using them:
public function postLogin(Request $request)
{
$email = $request->get('email');
$identity = $this->identific...
NuGet for solutions with multiple projects
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For anybody stumbling across this, now there is the following option :
Right-click your solution > Manage NuGet Packages for Solution...
... Or:
Tools > Library Package Manager > Manage NuGet Packages for Solution...
And if you go to the I...
What are the differences between numpy arrays and matrices? Which one should I use?
...the calls to the dot function. But this argument will disappear in future, now that the @-operator is accepted for use with matrix multiplication, see PEP 465. This will need Python 3.5 and the latest version of Numpy. The matrix class might be deprecated in the far future, so better to use ndarray ...
Efficiently convert rows to columns in sql server
...nt, PostalCode, LastName, AccountNumber)
) piv;
See Demo.
Pivot with unknown number of columnnames
If you have an unknown number of columnnames that you want to transpose, then you can use dynamic SQL:
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
select @cols = STUFF((SELECT ',...
UICollectionView Set number of columns
I just started learning about UICollectionViews. I'm wondering if anyone knows how to specify the number of columns in a collectionview. The default is set to 3 (iPhone/portrait). I've looked at the documentation and can't seem to find a concise answer.
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How can building a heap be O(n) time complexity?
...t of the nodes we are calling siftDown from the bottom of the tree, we are now calling siftDown from the top of the tree on each iteration! Although the tree is shrinking, it doesn't shrink fast enough: The height of the tree stays constant until you have removed the first half of the nodes (when yo...
C++ map access discards qualifiers (const)
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I would add that now in C11 you can use: std::map::at(key) and avoid the iterator.
– Juan Besa
Dec 19 '13 at 19:17
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Docker - how can I copy a file from an image to a host?
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I don't know why this is not selected as the correct answer.
– CentAu
Apr 2 '19 at 16:14
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