On 1/19/10 12:46 PM, Luca Beltrame wrote:
> Hello again,
>
> the porting of the code is getting along nicely (thanks to the help in this
> ML), and I've got more questions on the way.
>
> In particular, how is the case of attrs(object, value) handled? In Python a
> function can't be an expression, so this can pose an issue when porting code
> that uses it. I read on the rinterface docs that do_slots_assign could be
> used, but I'm not sure if it's the right way to go.
I am not sure to follow you about "In Python a function can't be an
expression".
The method "do_slots_assign" should able to set attributes.
> Likewise, I have a question on the *apply functions. Usually I *don't* use
> them (as I have equivalents in Python that are faster to use) but for certain
> specific objects they are required. As you can't really pass a Python function
> there, should I just use the "r" instance to generate a function and pass it
> like that? Example:
Passing Python function should be possible (but that would be for
release 2.2, most likely).
> my_function = ro.r("my_function (x)<- do_something_there")
> base.apply(data_structure, 1, my_function)
>
> Or is there a better way?
Here "better" is context-dependent, I suppose.
If my_function can be written in Python, one option is:
m = data_structure
res = [ my_function( m.rx(i+1, True) )for i in xrange(m.nrow) ]
L.
> Thanks!
>
>
>
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attendees to learn about information security's most important issues through
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