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best way to get the key of a key/value javascript object
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Accessing a Ruby hash with a variable as the key
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Use array value as variable
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MySQL Hashing Function Implementation
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How to make HashMap work with Arrays as key?
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What's a correct and good way to implement __hash__()?
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Making hashes find each other by their values using Ruby
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PHP hashing function that returns an integer (32bit int)
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Can strings be used as an array index?
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How can I make hash key lookup case-insensitive?
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash.new([])
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Ruby - Access multidimensional hash and avoid access nil object
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Is there a string that's hash is equal to itself?
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Converting an array of hashes to ONE hash in Ruby
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How do I sort an array of hashes by a value in the hash?