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What does the arrow operator, '->', do in Java?
While hunting through so<em>mem>e code I ca<em>mem>e across the arrow operator, what exactly does it do? I thought Java did not have an arrow operator.
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Is it possible to hide extension resources in the Chro<em>mem>e web inspector network tab?
When I'<em>mem> viewing the downloaded resources for a page in the Chro<em>mem>e web inspector, I also see the HT<em>Mem>L/JS/CSS requested by certain extensions.
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<em>mem>ongodb/<em>mem>ongoose find<em>Mem>any - find all docu<em>mem>ents with IDs listed in array
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The find function in <em>mem>ongoose is a full query to <em>mem>ongoDB. This <em>mem>eans you can use the handy <em>mem>ongoDB $in clause, which works just like the SQL version of the sa<em>mem>e.
<em>mem>odel.find({
'_id': { $in: [
<em>mem>ongoose.Types.ObjectId('4ed3ede8844f0f35...
How to drop into REPL (Read, Eval, Print, Loop) fro<em>mem> Python code
Is there a way to progra<em>mem><em>mem>atically force a Python script to drop into a REPL at an arbitrary point in its execution, even if the script was launched fro<em>mem> the co<em>mem><em>mem>and line?
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How to count occurrences of a colu<em>mem>n value efficiently in SQL?
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This should work:
SELECT age, count(age)
FRO<em>Mem> Students
GROUP by age
If you need the id as well you could include the above as a sub query like so:
SELECT S.id, S.age, C.cnt
FRO<em>Mem> Students S
INNER JOIN (SELECT age, count(age) as cnt
FR...
When does static class initialization happen?
... but I access a static field, are ALL the static blocks and private static <em>mem>ethods used to instantiate private static fields called (in order) at that instant?
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Django in / not in query
I'<em>mem> trying to figure out how to write a 'not in' style query in django.
For exa<em>mem>ple, the query structure I'<em>mem> thinking of would look like this.
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Difference between `data` and `newtype` in Haskell
...presentation
A newtype guarantees that your data will have exactly the sa<em>mem>e representation at runti<em>mem>e, as the type that you wrap.
While data declares a brand new data structure at runti<em>mem>e.
So the key point here is that the construct for the newtype is guaranteed to be erased at co<em>mem>pile ti<em>mem>e.
E...
git update-index --assu<em>mem>e-unchanged on directory
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git update-index wants the file na<em>mem>es on its co<em>mem><em>mem>and line, not on its standard input.
Step 1:
cd into the folder you want to assu<em>mem>e is unchanged
Step 2:
You can do either this:
git update-index --assu<em>mem>e-unchanged $(git ls-files | tr '\n' ' ')
or
git ...
Viewing a Deleted File in Git
I've deleted a file with Git and then co<em>mem><em>mem>itted, so the file is no longer in <em>mem>y working copy. I want to look at the contents of that file, but not actually restore it. How can I do this?
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