You can solve it pretty much the same way. Expose a function
__*etitem__.
It would look something like this:
void set(thingy_t thingy&, int index, value_type& val){...}
value_type get(const thingy_t thingy&, int index ){...}
And then you export them in the class_ exposer:
class_< thingy_t >("thingy_t")
.def("__getstate__", &get)
.def("__setstate__", &set)
One wrinkle to watch out for: remember not to name the c++ functions
starting with '__'
Initial double underscores are reserved for the compiler.
-----Original Message-----
From:
cplusplus-sig-bounces+matthew.scouten=tradingtechnologies....@python.org
[mailto:cplusplus-sig-bounces+matthew.scouten=tradingtechnologies....@py
thon.org] On Behalf Of Jakob van Santen
Sent: Tuesday, August 04, 2009 8:23 AM
To: cplusplus-sig@python.org
Subject: [C++-sig] Keyed properties?
Hello,
I'm in the process of hiding the unnecessarily verbose parts of a C++
interface behind Python properties, and I've run in to a slight
problem. We have a bunch of classes that expose private std::vectors
via Get(int index) and Set(int index, value_type& val) methods.
Ideally, I'd like to replace
thingy.GetATWDGain(1)
thingy.SetATWDGain(1, 254.5)
with
thingy.atwd_gain[1]
thingy.atwd_gain[1] = 254.5
I know how I would solve this in pure Python (something similar to
this: http://code.activestate.com/recipes/440514/), but I'm wondering
if there's a clever way to do this in Boost.Python without messing
around with the library itself. If anyone has done this already, I'd
be curious to know how.
Cheers,
Jakob van Santen
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