Arithmency - Page 5
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Welcome to Potter's Army

We have been a Harry Potter Roleplaying site since 2007. If you're an old member we hope you come check out the discord link provided below. And if you're looking for a new roleplaying site, well, we're a little inactive. But every once and a while nostalgia sets in and a few of our alumni members will revisit the old stomping grounds and post together. Remember to stay safe out there. And please feel free to drop a line whenever!

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Since every few months or so a few of our old members get the inspiration to revisit their old stomping grounds we have decided to keep PA open as a place to revisit old threads and start new ones devoid of any serious overarching plot or setting. Take this time to start any of those really weird threads you never got to make with old friends and make them now! Just remember to come say hello in the chatbox below or in the discord. Links have been provided in the "Comings and Goings" forum as well as the welcome widget above.

Arithmency

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Post by Aminia Lestrange Thu Jun 12, 2008 4:16 am

Aminia put her scale away and then walked out and called behinde her "Bye professor!"
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Post by Jess Potter Thu Jun 12, 2008 7:26 am

Jess' voice echoed through the door as he shouted "Any homework?"
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Post by Guest Fri Jun 13, 2008 7:57 am

{{New lesson}}

Jack opens the door, then pulled a large, ugly, silver knob, which pulled the snuffers off the lamps; the lamps promptly flickered into life. He dumped his briefcase on the desk, unlocked the scales cupboard and started writing on the blackboard.

ARITHMANCY - Black Boxes and Arithmancy

Black boxes have been a universal method of abstraction of many years. Black boxes work like this:

Arithmency - Page 5 180px-Blackbox.svg
You can create a black box in arithmancy using the (define ... ) utility. A sample (define ) is given below.
Code:
(define (square x) (* x x))
(define defines a black box. (square x) means for the black box called "square", an expression identified as "x" should be passed. And finally (* x x) means multiply the expression "x" by itself, as per normal arithmancy rules. Don't forget to close parenthesis! And to use the black box we've just created, we simply call it like so:
Code:
(square 5)
Which will return 25, the square of 5.

Jack sits back down and waits for a class to turn up.
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Post by Jess Potter Fri Jun 13, 2008 8:15 am

Jess walked in and looked at the board. he sighed and turned around. he then preceeded to walk back out.
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Post by Aminia Lestrange Fri Jun 13, 2008 4:34 pm

Aminia walked into class and saw Jess "Hey Jess," she then looked up "Oh hello Professor!" she then looked up at the black board "Bloody Hell I hate math!" she whispered taking a seat in the middle of the class/
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Post by Jess Potter Fri Jun 13, 2008 4:38 pm

Jess sghed and walked back in. he took a seat at the very back of the desk and sighed once more.
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Post by Guest Sat Jun 14, 2008 9:44 pm

Jack walked over to a different cabinet and pulled out some black boxes. "You write what it's called here," he said. pointing at a little white mark, "then you use it like you would an addition or subtraction or whatever else you want to do."
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Post by Jess Potter Sun Jun 15, 2008 2:26 am

Jess started doing as he said and found it working.
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Post by Guest Mon Jun 16, 2008 3:55 am

"Here's a hint, Jess. If it looks bad, try it. It may be bad, it may not be. Remember to try your personal best and persevere!" Jack said, grinning lopsidedly. "I once hated arithmancy myself; and look at me - an arithmancy teacher."
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Post by Aminia Lestrange Mon Jun 16, 2008 4:55 am

Aminia did as she was told but found it hard.
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