On Fri, Mar 16, 2012 at 8:20 AM, Marcus Denker <marcus.den...@inria.fr> wrote: > > On Mar 16, 2012, at 12:24 AM, Igor Stasenko wrote: > >> you can always make dependency less hardcoded: >> >> Smalltalk at: #ZnClient ifAbsent: [ self error: 'sorry dude' ] >> ifPresent: [:client | >> ... download stuff , whatever ] > > > Why don't we make that the default? That is, compile all globals > to something like "self environment lookUp: #ClassName" ? >
In general it will lead to unimplemented calls so it is always better to solve it with polymorphism. However we need some standard way how to work with that. - the expression "self environment" is not good because the message #environment is defined only in classes and for nil, not in Object. - we should rise a standard exception with default action taken from UIManager. - there should be an optional variant messages that take a package name as an argument so the error handling will be able to tell user what package should be installed. -- Pavel > Marcus > > > -- > Marcus Denker -- http://marcusdenker.de > >
