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get keys of json-object in JavaScript [duplicate]
I have a json-object in JavaScript and I want to get the used keys in it. My JavaScript-Code looks like this:
3 Answers
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Bitwise operation and usage
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Bitwise operators are operators that work on multi-bit values, but conceptually one bit at a time.
AND is 1 only if both of its inputs are 1, otherwise it's 0.
OR is 1 if one or both of its inputs are 1, otherwise it's 0.
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Checkout old commit and make it a new commit [duplicate]
...mits ago as the new version. If I do git checkout xxxx , it creates a new branch and it seems like I can only merge it? Could I make this the new "master version"?
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List vs tuple, when to use each? [duplicate]
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There's a strong culture of tuples being for heterogeneous collections, similar to what you'd use structs for in C, and lists being for homogeneous collections, similar to what you'd use arrays for. But I've never quite squared this with the mutability issue ...
What optimizations can GHC be expected to perform reliably?
GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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SQL Server - Return value after INSERT
I'm trying to get a the key-value back after an INSERT-statement.
Example:
I've got a table with the attributes name and id. id is a generated value.
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Most efficient way to create a zero filled JavaScript array?
What is the most efficient way to create an arbitrary length zero filled array in JavaScript?
41 Answers
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How can I check if character in a string is a letter? (Python)
I know about islower and isupper , but can you check whether or not that character is a letter?
For Example:
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Hidden features of Scala
What are the hidden features of Scala that every Scala developer should be aware of?
28 Answers
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RegEx for Javascript to allow only alphanumeric
... everyone I try only works if the string is alphanumeric, meaning contains both a letter and a number. I just want one what would allow either and not require both.
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