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From sebb <seb...@gmail.com>
Subject Re: svn commit: r1042610 - /commons/proper/math/branches/MATH_2_X/src/main/java/org/apache/commons/math/linear/RealVector.java
Date Tue, 07 Dec 2010 02:10:11 GMT
On 6 December 2010 22:21, Gilles Sadowski <gilles@harfang.homelinux.org> wrote:
>> >> > -     * @deprecated in 2.2 (to be removed in 3.0). Please use
>> >> > -     * {@link #map(UnivariateRealFunction)} directly with
>> >> > -     * the function classes in package
>> >> > -     * {@link org.apache.commons.math.analysis.function}.
>> >> > +     * @deprecated in 2.2 (to be removed in 3.0).
>> >>
>> >> Why not leave the reference to #map(UnivariateRealFunction) ?
>> >
>> > Because the package "function" does not exist in MATH_2_X.
>>
>> I know that, but #map(UnivariateRealFunction) does exist (in the same
>> source file).
>>
>> It was only the reference to the package name that was wrong.
>>
>> If the replacement for the deprecated methods is not
>> #map(UnivariateRealFunction), then whatever is the replacement should
>> be specified in the Javadoc.
>
> The replacement is the method "map" (which exists) together with the
> appropriate function (which doesn't, unless someone wants to backport the
> "function" package).

There are several implementations of UnivariateRealFunction, e.g.
PolynomialFunctionLagrangeForm.

Are these not suitable as parameters to the map method?

> I think that we agreed with Phil that when the replacement doesn't exist, it
> is sufficient to warn the users with a terse deprecation message.

I don't think it is right to leave the user totally in the dark as to
how to resolve the deprecation warnings.

>
> Regards,
> Gilles
>
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