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mongodb/mongoose findMany - find all documents with IDs listed in array
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The find function in mongoose is a full query to mongoDB. This means you can use the handy mongoDB $in clause, which works just like the SQL version of the same.
model.find({
'_id': { $in: [
mongoose.Types.ObjectId('4ed3ede8844f0f351100000c'),
mongoose.Types.ObjectId...
Creating my own Iterators
I'm trying to learn C++ so forgive me if this question demonstrates a lack of basic knowledge, you see, the fact is, I have a lack of basic knowledge.
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What are “signed” cookies in connect/expressjs?
... or not.
Edit
And to create a signed cookie you would use
res.cookie('name', 'value', {signed: true})
And to access a signed cookie use the signedCookies object of req:
req.signedCookies['name']
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The bare minimum needed to write a MSMQ sample application
...samples of how to use MSMQ in C# and even one full chapter of a book about Message Queue...But for a quick test all I need is to cover is this scenario, not even in a perfect way, just for a quick demo:
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django unit tests without a db
...to set up. And while it is fast to setup a db, I really don't need it in some situations.
11 Answers
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Why should I use 'li' instead of 'div'?
...s simply using divs when listing items. I can make both look exactly the same so where is the functional advantage to creating an unordered list vs lining up divs?
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HTML5 Pre-resize images before uploading
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Yes, use the File API, then you can process the images with the canvas element.
This Mozilla Hacks blog post walks you through most of the process. For reference here's the assembled source code from the blog post:
// from an input element
var filesToUpload = input.files;
var file = filesToUploa...
Add column with number of days between dates in DataFrame pandas
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Assuming these were datetime columns (if they're not apply to_datetime) you can just subtract them:
df['A'] = pd.to_datetime(df['A'])
df['B'] = pd.to_datetime(df['B'])
In [11]: df.dtypes # if already datetime64 you don't need to use to_datetime
Out...
Difference between “read commited” and “repeatable read”
I think the above isolation levels are so alike. Could someone please describe with some nice examples what the main difference is ?
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Creating a blurring overlay view
... fine-tuned for performance and great battery life, plus it's easy to implement.
Swift:
//only apply the blur if the user hasn't disabled transparency effects
if !UIAccessibility.isReduceTransparencyEnabled {
view.backgroundColor = .clear
let blurEffect = UIBlurEffect(style: .dark)
le...