HashValue: an object for holding MD5 and SHA hashes | Hacker News Reader

HashValue: an object for holding MD5 and SHA hashes

cocoawithlove.com

11 pointstwampss6 comments

Wow. A wrapper class for MD5 and SHA functions? A non-standard library for a standard library? That's it?

I realize this is Objective-C and hence it even works on the iPhone which gives it some sort of pseudo-cool alibi and blah blah, but are we seriously having this kind of über-basic stuff on the HN frontpage?

Ya, I agree. There's a lot of cool stuff you can do with hashes. I started working on a library for Ruby a couple weeks ago for creating hashes and tracking history of objects.

    "kimmy".gibbler              # => c8027100ecc54945ab15ddac529230e38b1ba6a1
    :kimmy.gibbler               # => 52be7494a602d85ff5d8a8ab4ffe7f1b171587df

    a = { :magic => :original }     
    a.gibbler_commit             # => d7049916ddb25e6cc438b1028fb957e5139f9910
    
    a[:magic] = :updated           
    a.gibbler_commit             # => b668098e16d08898532bf3aa33ce2253a3a4150e
    
    a[:magic] = :changed 
    a.gibbler_commit             # => 0b11c377fccd44554a601e5d2b135c46dc1c4cb1
    
    a.gibbler_history            # => d7049916, b668098e, 0b11c377
    
    a.gibbler_revert 'd7049916'  # Return to a specific commit
    a.gibbler                    # => d7049916ddb25e6cc438b1028fb957e5139f9910
    a                            # => { :magic => :original }

You seem to have a serious Full House problem, but an awesome library coming along. I'd expect gibbler_revert to be gibbler_revert!, plus a non-destructive version to fetch a specific commit. If I get some time, I may fork/hack a little.

(For the Google impaired: http://github.com/delano/gibbler/tree/master)

Haha, it's true. I do have a serious FH problem.

I also needed an obscure but familiar keyword so the method could be included in any object with low risk of collision. There is currently near-zero usage of the keyword "gibbler" in any project (Ruby or otherwise).

And thanks for the ! correction. I've updated the repo and docs.

When you say Full House problem, are you referring to collision of names? (All Google comes up with is info on the 90s TV show)

Gibbler was a character on the show. Seems the name was chosen because it's apparently unique in the ruby ecosystem.

I know this only because I was in love with her at the time .. guh

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