https://github.com/theodorton/ruby-string-calculate

Extension of Ruby's String class to calculate simple mathematic expressions
https://github.com/theodorton/ruby-string-calculate

Last synced: 3 days ago
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Extension of Ruby's String class to calculate simple mathematic expressions

• Host: GitHub
• URL: https://github.com/theodorton/ruby-string-calculate
• Owner: theodorton
• Created: 2011-09-12T09:46:17.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2015-09-08T05:41:22.000Z (over 9 years ago)
• Last Synced: 2024-12-26T03:24:02.220Z (17 days ago)
• Language: Ruby
• Size: 138 KB
• Stars: 3
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Calculator extension for the Ruby Strings #

Adds a method `calculate` to the Ruby String-class.

The method can do the following mathematical operations:

*   Addition

*   Subtraction

*   Multiplication

*   Division

### Examples: ###

    "1 + 2".calculate   # => 3

    "9 - 2".calculate   # => 7

    "5 * 2".calculate   # => 10

    "15 / 3".calculate  # => 5

## Advanced expressions ##

It also handles more advanced expressions with operations done in the following order:

1.  Multiplication

2.  Division

3.  Subtraction

4.  Addition

### Examples: ###

    "15+35-5*5".calculate           # => 25

    "5+10/2-8*4".calculate          # => -22

    "16*12/6+67-12+20/5".calculate  # => 91