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How to flatten tree via LINQ?
So I have simple tree:
14 Answers
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Node.js Mongoose.js string to ObjectId function
...oose? The schema specifies that something is an ObjectId, but when it is saved from a string, mongo tells me it is still just a string. The _id of the object, for instance, is displayed as objectId("blah") .
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What's the canonical way to check for type in Python?
What is the best way to check whether a given object is of a given type? How about checking whether the object inherits from a given type?
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How to create a bash script to check the SSH connection?
I am in the process of creating a bash script that would log into the remote machines and create private and public keys.
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How to insert a value that contains an apostrophe (single quote)?
What is the correct SQL syntax to insert a value with an apostrophe in it?
10 Answers
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Remove property for all objects in array
I want to remove the bad property from every object in the array. Is there a better way to do it than using a for loop and deleting it from every object?
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How do SQL EXISTS statements work?
I'm trying to learn SQL and am having a hard time understanding EXISTS statements. I came across this quote about "exists" and don't understand something:
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When should I use the HashSet type?
I am exploring the HashSet<T> type, but I don't understand where it stands in collections.
11 Answers
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How does collections.defaultdict work?
I've read the examples in python docs, but still can't figure out what this method means. Can somebody help? Here are two examples from the python docs
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Obtaining a powerset of a set in Java
The powerset of {1, 2, 3} is:
26 Answers
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