gberenfield

    # Because we have some old legacy users in the database, we need to override Devises method for checking if a password is valid.
    # We first ask Devise if the password is valid, and if it throws an InvalidHash exception, we know that we're dealing with a
    # legacy user, so we check the password against the SHA1 algorithm that was used to hash the password in the old database.  
    #SOURCES OF SOLUTION:
    # http://stackoverflow.com/questions/6113375/converting-existing-password-hash-to-devise
    # https://github.com/binarylogic/authlogic/blob/master/lib/authlogic/crypto_providers/sha512.rb
    # https://github.com/plataformatec/devise/blob/master/lib/devise/encryptors/authlogic_sha512.rb
    
    alias :devise_valid_password? :valid_password?
    def valid_password?(password)

gberenfield

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Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

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