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Determine what attributes were changed in Rails after_save callback?
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I think after_update is deprecated now? Anyway, I tried this in an after_save hook and that seemed to work fine. (The changes() hash still hasn't been reset yet in an after_save, apparently.)
– Tyler Rick
Mar 14 '13 at 5:...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...e made the change you suggested. I had tested with the brackets before and now I see it works without them. Happy New Year to you, too.
– T-CatSan
Jan 1 '14 at 2:44
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Chaining multiple filter() in Django, is this a bug?
...__event=event) & Q(shiftregistrations__shifts=False)
What you can do now is to use an annotation count-filter.
In this case we count all shifts which belongs to a certain event.
qs: EventQuerySet = qs.annotate(
num_shifts=Count('shiftregistrations__shifts', filter=Q(shiftregistrations__e...
Recursive file search using PowerShell
...ion. If you want to search for a file with a certain extension, but don't know the name of the file, you can use:
dir -Path C:\FolderName -Filter *.fileExtension -Recurse | %{$_.FullName}
Or vice versa:
dir -Path C:\FolderName -Filter FileName.* -Recurse | %{$_.FullName}
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Left Align Cells in UICollectionView
... the array. You may look into the source code for its implementation.)
So now the only thing we have to do is to implement the layoutAttributesForItem(at indexPath: IndexPath) function properly. The super class UICollectionViewFlowLayout already puts the correct number of cells in each line so we o...
Why is semicolon allowed in this python snippet?
...limit statements if you wish to put multiple statements on the same line.
Now, why is this allowed? It's a simple design decision. I don't think Python needs this semi-colon thing, but somebody thought it would be nice to have and added it to the language.
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Pandas percentage of total with groupby
...r
19 s ± 77.1 ms per loop
(mean ± std. dev. of 7 runs, 1 loop each)
So now we see x10 speed up on large, high cardinality datasets.
Be sure to UV these three answers if you UV this one!!
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What is the best method to merge two PHP objects?
...objB AS $var=>$value){
$objA->$var = $value;
}
That's all. You now have objA with all values from objB.
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Detect blocked popup in Chrome
...me. Looks like Chrome actually executes any Javascript in the popup window now. I ended up checking for a screenX value of 0 to check for blocked popups. I also think I found a way to guarantee that this property is final before checking. This only works for popups on your domain, but you can add an...
Get event listeners attached to node using addEventListener
...ification or reasoning for why it must work this way? Clearly the browser knows what all of the listeners are.
– Darth Egregious
Apr 5 '12 at 19:23
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