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List:       jakarta-commons-dev
Subject:    [jira] [Commented] (MATH-809) Expressions and functions interpreter
From:       "Gilles (JIRA)" <jira () apache ! org>
Date:       2012-06-30 18:18:45
Message-ID: 1108470463.75691.1341080325909.JavaMail.jiratomcat () issues-vm
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    [ https://issues.apache.org/jira/browse/MATH-809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404594#comment-13404594 \
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Gilles commented on MATH-809:
-----------------------------

Thanks for your interest in Commons Math. A new feature such as this one should first \
be discussed in the "dev" ML: http://commons.apache.org/math/mail-lists.html

However something similar (IIRC) came up some time ago, and the conclusion was that \
it didn't belong in the Commons Math project. The reason was that the focus here is \
on numerical methods, not on input/output (in your case: parsing a string that \
happens to represent a mathematical function).

Your interpreter library could of course _depend_ on the Commons Math library. But I \
cannot see how it would be more useful by being _within_ Commons Math itself.

If you are not satified with this explanation, please post a message to the ML (using \
a prefix of "[Math]" in the subject line, as the list is shared with other "Commons" \
projects).  
> Expressions and functions interpreter
> -------------------------------------
> 
> Key: MATH-809
> URL: https://issues.apache.org/jira/browse/MATH-809
> Project: Commons Math
> Issue Type: New Feature
> Affects Versions: 3.1
> Reporter: Guillaume Chauvet
> Priority: Trivial
> Attachments: interpreter.patch
> 
> 
> Expressions and functions interpreter forked from exp4j library \
> (http://projects.congrace.de/exp4j, an Apache 2 project). This implementation use \
> Dijkstra's Shunting Yard Algorithm. The patch also allows parsing of E notation \
> numbers in expressions.

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