https://github.com/tomtom/tcalc_vim

A small ruby-based RPN-calculator with optional VIM integration
https://github.com/tomtom/tcalc_vim

Last synced: about 1 month ago
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A small ruby-based RPN-calculator with optional VIM integration

• Host: GitHub
• URL: https://github.com/tomtom/tcalc_vim
• Owner: tomtom
• Created: 2010-04-06T17:41:20.000Z (over 16 years ago)
• Default Branch: master
• Last Pushed: 2013-10-20T14:39:09.000Z (over 12 years ago)
• Last Synced: 2025-02-22T05:27:52.105Z (over 1 year ago)
• Language: Ruby
• Homepage: http://www.vim.org/scripts/script.php?script_id=2040
• Size: 125 KB
• Stars: 3
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • Changelog: CHANGES.TXT

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README

          
It turns out that ruby is pretty good at maths and deals well with 

complex or rational numbers etc. Anyway, in certain occasions a postfix 

syntax and a stack are better suited for calculations than ruby's infix 

syntax. So, here comes ...

:TCalc[!]

    A small ruby-based[*] RPN-calculator, a simple ASCII function 

    plotter, and stack-based playground :-).

The tcalc.rb script can also be used as a stand-alone calculator (with 

optional support for curses and readline). Run "tcalc --help" for 

information on the command-line options.

Input:

    - Numbers (anything that starts with "-" or a decimal)

    - Strings (anything that matches /^"(.*?)"$/)

        - Be aware that the strings and numbers get evaluated by ruby. 

          You can thus execute ruby code by input like: -1;p'foo'

    - Methods & constants of the following classes are available:

        Float    :: http://www.ruby-doc.org/core/classes/Float.html

        Complex  :: http://www.ruby-doc.org/core/classes/Complex.html

        Rational :: http://www.ruby-doc.org/core/classes/Rational.html

        Integer  :: http://www.ruby-doc.org/core/classes/Integer.html

        Matrix   :: http://www.ruby-doc.org/core/classes/Matrix.html

        Vector   :: http://www.ruby-doc.org/core/classes/Vector.html

        Math     :: http://www.ruby-doc.org/core/classes/Math.html

    - #N (pull the item at position N to the top)

    - Call words: WORD[COUNT][@ARRITY][,ARGUMENT]

        - If COUNT is "#", the top element will be used.

    - Enter, escape => exit

Tokens are separated by blanks (� la forth). The blanks between the 

words thus are significant.

[*] For use with VIM, built-in ruby support (:echo has('ruby')) is 

required.

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Status:  Works for me (there may be some minor quirks)

Install: See http://github.com/tomtom/vimtlib/blob/master/INSTALL.TXT

See http://github.com/tomtom for related plugins.