[squeak-dev] Squeak 6.0 alpha-20601 browsing revisions fails because of wrong class of requestor
eliot.miranda at gmail.com
Fri Aug 27 16:41:10 UTC 2021
> On Aug 27, 2021, at 12:07 AM, Marcel Taeumel <marcel.taeumel at hpi.de> wrote:
> Hi Tim --
> > Pragmas do something similar; an interesting idea for annotating code and then no tool(s) that make it easy to work out what is going on.
> The standard pragmas integrate well with the "Senders" tool. :-)
and, which is sadly what lots of designers miss, with perform:wothArguments: and/or sentTo:/sendMessage: etc. ie a pattern that works is
- create a builder object that understands the pragma(s) in question
- visit the method(s) implementing the pragma
- send the pragma to the builder
This is how pragmas for menus should be done.
- give the base menu to a menu decorator builder, which is parameterized with the name of the menu and the class(es) involved in the menu
- have the menu decorator builder visit the relevant pragma methods in the class(es)
- use the resulting decorated menu
>> Am 25.08.2021 19:19:07 schrieb tim Rowledge <tim at rowledge.org>:
>> > On 2021-08-25, at 5:16 AM, Marcel Taeumel wrote:
>> > Hi Tim --
>> > Please update your image and see if it got fixed. :-)
>> Well it hasn't failed after a dozen or so tries, so that looks better.
>> The Service stuff is another classic example of a probably good idea being pushed into the system far too early; although it actually has some class comments that might even make sense if you have the time to sit and read and dig around, there is a lack of an overview of what & why. The 'services browser' does... what?
>> Making nice clean abstractions can be a great thing. Ending up with a great yawning gulf between the two sides of the abstraction means a huge problem in understanding what the hell is going on. Traits did this and we end up with some complicated code sitting around almost entirely unused. Pragmas do something similar; an interesting idea for annotating code and then no tool(s) that make it easy to work out what is going on.
>> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
>> Esc key to reboot Universe, or any other key to continue...
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