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Xcode suddenly stopped running project on hardware: “Could not launch xxx.app: .. No such file..” [c
...tarted directly after I deleted it from the device and attempted to re-install by rerunning it in Xcode (something I've done hundreds of times before).
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Not equal != operator on NULL
...dicates for such situations.
This behavior is not specific to SQL Server. All standards-compliant SQL dialects work the same way.
Note: To compare if your value is not null, you use IS NOT NULL, while to compare with not null value, you use <> 'YOUR_VALUE'. I can't say if my value equals or ...
Entity Framework Refresh context?
...in your context is to dispose your context and create a new one.
If you really need to refresh some entity and you are using Code First approach with DbContext class, you can use
public static void ReloadEntity<TEntity>(
this DbContext context,
TEntity entity)
wh...
How to get Chrome to allow mixed content?
...lt is blocking mixed content. How do I adjust my settings/configuration to allow mixed content without making any adjustments on the UI every time?
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cv2.imshow command doesn't work properly in opencv-python
... only works with waitKey():
import cv2
img = cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow', img)
cv2.waitKey()
(The whole message-loop necessary for updating the window is hidden in there.)
share
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Pandas count(distinct) equivalent
...if I have multiple columns that I want to be unique together, like in .drop_duplicates(subset=['col1','col2'])?
– ErnestScribbler
Oct 2 '17 at 8:10
4
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How do I replace multiple spaces with a single space in C#?
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I have copy and paste that and it works. I really do not like REgex but this time it saves my life.
– Pokus
Oct 15 '08 at 22:22
9
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ALTER TABLE to add a composite primary key
I have a table called provider . I have three columns called person , place , thing . There can be duplicate persons, duplicate places, and duplicate things, but there can never be a dupicate person-place-thing combination.
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Bulk package updates using Conda
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You want conda update --all.
conda search --outdated will show outdated packages, and conda update --all will update them (note that the latter will not update you from Python 2 to Python 3, but the former will show Python as being outdated if you ...
Swift: Pass array by reference?
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@Boon Array is still semantically copied/passed-by-value, but just optimised to use COW.
– eonil
Oct 14 '14 at 3:38
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