Recent questions tagged Hash

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hash - Why are XOR often used in java hashCode() but another bitwise operators are used rarely?

I often see code like int hashCode(){ return a^b; } Why XOR? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hash - Is MD5 still good enough to uniquely identify files?

Is MD5 hashing a file still considered a good enough method to uniquely identify it given all the breaking of MD5 ... file is. Any thoughts? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hash - Why is '397' used for ReSharper GetHashCode override?

Like many of you, I use ReSharper to speed up the development process. When you use it to override the equality ... of it being a prime number? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hash - Why aren't Python sets hashable?

I stumbled across a blog post detailing how to implement a powerset function in Python. So I went about trying ... Python sets are not hashable? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hash - When is CRC more appropriate to use than MD5/SHA1?

When is it appropriate to use CRC for error detection versus more modern hashing functions such as MD5 or ... implement on embedded hardware? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hash - Asking "is hashable" about a Python value

I am interested in taking an arbitrary dict and copying it into a new dict, mutating it along the way. One ... string for "unhashable type" ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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