https://github.com/tommay/clock-in-erlang

Rewrite of my "clock equations" program in Erlang. I'm getting better!
https://github.com/tommay/clock-in-erlang

Last synced: about 6 hours ago
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Rewrite of my "clock equations" program in Erlang. I'm getting better!

• Host: GitHub
• URL: https://github.com/tommay/clock-in-erlang
• Owner: tommay
• License: mit
• Created: 2015-02-24T07:00:10.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-09-12T03:26:39.000Z (about 9 years ago)
• Last Synced: 2023-04-19T16:52:47.732Z (over 1 year ago)
• Language: Erlang
• Size: 156 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
clock_equations

===============

Figure out the simple equations that can be made from the time on a digital clock

My 9-year old daughter Chloe and I like to look at the digital clock

sometimes and make equations out of the numbers.  For example,

12:02 could be 1*2+0 = 2, and 12:03 could be 1+2 = 0+3.

I thought it would be fun to code up a program to find all the "clock

equations".  So I did.  First in Ruby, now in Erlang.

There are two parts: generating the equations, and evaluating their

truth value.

Generating the equations is done in clock.erl.

The equations' truth values are determined using an expression

evaluator (pratt_evaluator.erl) built on a generic Pratt parser

(pratt_parser.erl).  That was the fun part!