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mongodb/mongoose findMany - find all documents with IDs listed in array
... of _ids and I want to get all docs accordingly, what's the best way to do it ?
5 Answers
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How to convert a Django QuerySet to a list
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You could do this:
import itertools
ids = set(existing_answer.answer.id for existing_answer in existing_question_answers)
answers = itertools.ifilter(lambda x: x.id not in ids, answers)
Read when QuerySets are evaluated and note that it is not good...
How can I multiply and divide using only bit shifting and adding?
How can I multiply and divide using only bit shifting and adding?
14 Answers
14
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How do I use vimdiff to resolve a git merge conflict?
I just merged a branch into my master in git and I got Automatic merge failed; fix conflicts and then commit the result. Now I ran git mergetool and vimdiff opened with the image below. I don't know how to use vimdiff. What does each panel here mean and how should I proceed to fix the merge conf...
Why does 'continue' behave like 'break' in a Foreach-Object?
...s from the script block which is invoked by ForEach-Object on a particular iteration, thus, it simulates the continue in a loop.
1..100 | ForEach-Object {
if ($_ % 7 -ne 0 ) { return }
Write-Host "$($_) is a multiple of 7"
}
There is a gotcha to be kept in mind when refactoring. Sometimes...
Counting inversions in an array
I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...
What are some uses of template template parameters?
...mp;value) {
}
Here, H is a template, but I wanted this function to deal with all specializations of H.
NOTE: I've been programming c++ for many years and have only needed this once. I find that it is a rarely needed feature (of course handy when you need it!).
I've been trying to think of good e...
How can I convert JSON to CSV?
I have a JSON file I want to convert to a CSV file. How can I do this with Python?
26 Answers
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Convert list to dictionary using linq and not worrying about duplicates
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how would i make this case insensitive
– leora
Jul 23 '10 at 15:04
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Recursive file search using PowerShell
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Use the Get-ChildItem cmdlet with the -Recurse switch:
Get-ChildItem -Path V:\Myfolder -Filter CopyForbuild.bat -Recurse -ErrorAction SilentlyContinue -Force
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