[squeak-dev] [ANN] OCompletion improves the accuracy of eCompletion

Romain Robbes romain.robbes at lu.unisi.ch
Tue May 12 08:07:47 UTC 2009

Dear Squeak users,

OCompletion is an extension to ECompletion. Like ECompletion, it  
the names of methods  as you write them in order to save you some  
The O in OCompletion stands for Omniscient and Omnipresent.

OCompletion is much more accurate than ECompletion. We tested it on the
development history of several projects
(see http://www.inf.unisi.ch/phd/robbes/papers/ASE2008-completion.pdf).

Across several hundred thousands tests of the completion, OCompletion's
algorithm scores a 70 (out of 100), while the eCompletion's algorithm
scores a 12. To achieve this level of accuracy, it learns from your  
of squeak and proposes to you methods you are more likely to use.

OCompletion shows a small, non-instrusive completion menu with potential
completions as you type method names. You don't need to call it  
with tab. Just press tab to insert a match, or the down arrow to  
select the next

To install it on Squeak or Pharo, simply execute the following line in  
your image:

Installer squeaksource project: 'OCompletion'; install: 'OCLoader'


Romain Robbes

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