Log of /trunk/pg/lib/Parser/List.pm

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Revision 2625 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Aug 16 18:35:12 2004 UTC (15 years, 4 months ago) by dpvc
File length: 7132 byte(s)
Diff to previous 2624

Added string comparison to all Value object classes (to compare the
string value of an object to another string).

Overloaded perl '.' operator to do dot product when the operands are
formulas returning vectors.  (Part of the auto-generation of
formulas).

A few improvements to real and complex class output results.

Made Union class slightly more robust and removed need for makeUnion
method other than in the Union itself.

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Revision 2624 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Aug 16 13:44:45 2004 UTC (15 years, 4 months ago) by dpvc
File length: 7321 byte(s)
Diff to previous 2594

Added support for unorderd list or formulas with partial credit.
Fixed type mismatch reporting in formula answer checker.
Fixed an error with Unions producing incorrect perl versions under
some circumstances.

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Revision 2594 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Aug 12 20:17:18 2004 UTC (15 years, 4 months ago) by dpvc
File length: 7042 byte(s)
Diff to previous 2579

Fixes for handling intervals better.  In particular, deal better with
ambiguous situations, like (1,2) that could be a point.

You can use [a,a] to specify the single point a.  I'd like to make {a}
represent this (and maybe even {a,b,c} to form finite sets), but this
would interfere with the use of { and } as alternative parentheses.
(Does anyone really use these?)

Do we need a cross product for intervals (and sets) as a means of
representing regions in R^2 (or higher)?

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Revision 2579 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Aug 9 21:38:01 2004 UTC (15 years, 4 months ago) by dpvc
File length: 6636 byte(s)
Diff to previous 2558

Significant update to new parser.

New features include:

  Better control over format of vector output (you can now
    specify ijk-format rather than <...> format)

  "Fuzzy" reals, where the relations like == return true when the
    two values are "close enough".  (This is controlable using
    parameters similar to those used in NUM_CMP).

  The fuzzy reals are now used in vectors/points/matrices/complexes/intervals
    and so on so that their relations will also be fuzzy.  E.g.,
    (1E-13,2) == (0,3) will be true, and norm(Vector(0,1E-13)) will
    equal 0.

  The two main portions of the parser (the Parser and Value packages)
    now share a common context object for configuration purposes.

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Revision 2558 - (view) (download) (as text) (annotate) - [select for diffs]
Added Wed Jul 28 20:32:33 2004 UTC (15 years, 4 months ago) by sh002i
File length: 6638 byte(s)

merged changes from rel-2-1-a1 -- stop using that branch.