#jython IRC Log

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IRC Log for 2015-06-02

Timestamps are in GMT/BST.

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[3:41] <jimbaker> i have done most of the work for yield from, but still debugging. should be done this week!
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[6:22] <ztane> mm need to merge int and long properly
[6:23] <ztane> is there any way to map 2 classes to the same python type?
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[7:55] <ztane> thinking of the PyInteger vs PyLong,
[7:56] <ztane> it would be beneficial to have *2* types for these to minimize the memory usage...
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[12:50] <agronholm> ztane: indeed, especially since integer can now be arbitrarily long
[12:50] <agronholm> (though of course that was already the case with the "long" type)
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[14:07] <ztane> the case ofc is that if a small int is stored, with ordinary java it would need a) type pointer, b) data area for the data < 64 bits and c) the optional pointer to the loooong data
[14:07] <ztane> somehow encoding 1024 in 192 bits does not sound exactly promising
[14:10] <ztane> *2* types means: 2 java classes obviously
[14:10] <ztane> 1 python type
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[14:13] <agronholm> jimbaker: will you also do async/await? that should be very similar
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[14:48] <jimbaker> agronholm, most likely
[15:06] <jimbaker> agronholm, this is also interesting http://bugs.jython.org/issue2361
[15:13] <jimbaker> fwiw, the regex performance has so many places where we can do much better, between not expanding into codepoint arrays to improving call site performance and avoiding reflection
[15:13] <jimbaker> just a good example of what can be done in jython in general
[15:32] <ztane> jimbaker: is it possible to map 2 java classes into 1 python type?
[15:32] <ztane> (the int<->long in python 3)
[15:44] <jimbaker> ztane, this is possible. just needs to be resolved in construction
[15:45] <jimbaker> we already use this functionality in jython, and PyInteger/PyLong almost do enough to make this happen
[15:51] <jimbaker> ztane, so PyType#type___new__ does this now in terms of making PyStringMap report its type as dict
[15:52] <jimbaker> (this functionality implements the one arg form of the type function)
[15:52] <jimbaker> (as well as the 3 arg form)
[16:01] <ztane> hmm... maybe there should be an interface like "PyInteger", with "PyShort" and "PyLong" implementations
[16:04] <ztane> (thinking about the issue of having 2 classes for int on java side)
[16:08] <jimbaker> well i would argue for the simplest possible change first, because it keeps our internal api parallel to cpython's
[16:08] <jimbaker> and that's also important for the jyni work
[16:09] <ztane> >= 192 bit integer variables :D
[16:09] <ztane> *values
[16:27] <ztane> agronholm: are you here or here? :D
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