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Posted to issues@commons.apache.org by "Guillaume Chauvet (JIRA)" <ji...@apache.org> on 2012/06/30 17:40:44 UTC
[jira] [Created] (MATH-809) Expressions and functions interpreter
Guillaume Chauvet created MATH-809:
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Summary: 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
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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[jira] [Updated] (MATH-809) Expressions and functions interpreter
Posted by "Guillaume Chauvet (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guillaume Chauvet updated MATH-809:
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Attachment: interpreter.patch
> 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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[jira] [Commented] (MATH-809) Expressions and functions interpreter
Posted by "Guillaume Chauvet (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13408009#comment-13408009 ]
Guillaume Chauvet commented on MATH-809:
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Thank you for your explanations, Gilles. I think it's possible to provide an alternative implementation without frontend by implementing the interpreter design pattern (to keeping goal of commons-math).
I will send a mail to dev list to discuss about this potential new feature.
> 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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[jira] [Commented] (MATH-809) Expressions and functions interpreter
Posted by "Gilles (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404594#comment-13404594 ]
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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[jira] [Commented] (MATH-809) Expressions and functions interpreter
Posted by "Gilles (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MATH-809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13436352#comment-13436352 ]
Gilles commented on MATH-809:
-----------------------------
The "dev" ML [thread|http://markmail.org/message/w5pvo7sp6y67wsbf] did not reach a conclusion. Please revive it if you still think that the feature fits within Commons Math.
> 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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