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IWETHEY Home / IWETHEY Board / Theory and Practice of Programming Forum / Lesson learned from Smalltalk
Post #112,641
by ChrisR
8/4/03 1:22:03 PM
Reply
New Lesson learned from Smalltalk
...was that inheritance is a very useful feature for mature code. And there in lies the rub - immature code should minimize the use of inheritance. Unfortunately, with static typing, you have to ake the decision on the type of delegation upfront. Dynamic languages allow you to work your way into inheritance instead of making it a now or never proposition.
Post #112,663
by deSitter
Picture of deSitter
8/4/03 2:43:03 PM
Reply
New sounds like a will
-drl
     Why extends is evil? - (johnu) - (44) - Aug. 4, 2003, 01:01:44 PM EDT
         Is this just for Java? - (drewk) - Aug. 4, 2003, 01:08:47 PM EDT
         This argument is needlessly pedantic, IMO - (FuManChu) - Aug. 4, 2003, 01:19:58 PM EDT
         Lesson learned from Smalltalk - (ChrisR) - (1) - Aug. 4, 2003, 01:22:03 PM EDT
             sounds like a will -NT - (deSitter) - Aug. 4, 2003, 02:43:03 PM EDT
         Inheritance is a tool. - (admin) - (7) - Aug. 4, 2003, 02:30:40 PM EDT
             Re: Inheritance is a tool. - (deSitter) - (3) - Aug. 4, 2003, 02:43:38 PM EDT
                 There's more to life than implementation inheritance. - (admin) - Aug. 4, 2003, 03:24:35 PM EDT
                 Definitions - (johnu) - (1) - Aug. 4, 2003, 03:24:52 PM EDT
                     I'd ask Alan Kay - (tuberculosis) - Aug. 21, 2007, 06:34:14 AM EDT
             Thank you, Scott! - (jb4) - (1) - Aug. 4, 2003, 07:25:50 PM EDT
                 Another Me Too - (JimWeirich) - Aug. 4, 2003, 07:36:37 PM EDT
             Good example of bad inheritance, java.util.Stack - (bluke) - Aug. 5, 2003, 08:14:25 AM EDT
         This guy cracks me up - (tuberculosis) - Aug. 21, 2007, 06:34:08 AM EDT
         IS A vs HAS A - (gdaustin) - (30) - Aug. 4, 2003, 10:30:10 PM EDT
             Quite. - (static) - Aug. 5, 2003, 08:16:32 AM EDT
             I missed that course - (drewk) - (18) - Aug. 5, 2003, 09:29:59 AM EDT
                 Shorthand for relationships - (admin) - (17) - Aug. 5, 2003, 09:36:46 AM EDT
                     Re: Shorthand for relationships - (deSitter) - (1) - Aug. 5, 2003, 09:40:20 AM EDT
                         snicker - (FuManChu) - Aug. 5, 2003, 10:51:07 AM EDT
                     ISA/HASA are good for a first approximation - (JimWeirich) - (14) - Aug. 5, 2003, 10:02:12 AM EDT
                         So what does it get you? - (drewk) - (10) - Aug. 5, 2003, 10:07:20 AM EDT
                             Specialization vs. Generalization - (gdaustin) - Aug. 5, 2003, 10:25:51 AM EDT
                             Code - (JimWeirich) - (7) - Aug. 5, 2003, 10:59:43 AM EDT
                                 Thanks, but what would HASA look like? -NT - (drewk) - (6) - Aug. 5, 2003, 11:22:29 AM EDT
                                     HASA - (gdaustin) - (5) - Aug. 5, 2003, 05:31:03 PM EDT
                                         See, that's where I always get tripped up - (drewk) - (4) - Aug. 5, 2003, 05:53:29 PM EDT
                                             There is a point to naming the useless stuff - (ben_tilly) - (3) - Sept. 21, 2003, 05:36:50 PM EDT
                                                 Clarification - (drewk) - (2) - Sept. 22, 2003, 10:37:14 AM EDT
                                                     Yes - (ben_tilly) - (1) - Sept. 22, 2003, 10:04:26 PM EDT
                                                         That's why I shouldn't be a teacher - (drewk) - Sept. 23, 2003, 10:51:27 AM EDT
                             The example of a stack (see post above) is a good one - (bluke) - Aug. 5, 2003, 11:47:35 AM EDT
                         My car is a Saturn - (gdaustin) - Aug. 5, 2003, 10:31:43 AM EDT
                         hierarchies and the real world - (tablizer) - (1) - Aug. 9, 2003, 02:07:51 PM EDT
                             Nonsense - (ChrisR) - Aug. 9, 2003, 03:51:57 PM EDT
             Not quite that simple - (tuberculosis) - (9) - Aug. 21, 2007, 06:36:01 AM EDT
                 Thing I love/hate about smalltalk - (drewk) - (2) - Aug. 5, 2003, 12:26:10 PM EDT
                     Similar to Python in that fashion -NT - (admin) - Aug. 5, 2003, 12:41:34 PM EDT
                     Its real -NT - (tuberculosis) - Aug. 21, 2007, 06:36:13 AM EDT
                 Forgot to mention: key driver is "substitutability" - (tuberculosis) - (4) - Aug. 21, 2007, 06:36:18 AM EDT
                     Techies at Hertz - (tablizer) - (3) - Aug. 9, 2003, 02:12:31 PM EDT
                         And if your Table or Data Structure is... - (ChrisR) - Aug. 9, 2003, 03:53:19 PM EDT
                         Mostly - (tuberculosis) - (1) - Aug. 21, 2007, 12:45:06 PM EDT
                             Or perhaps that .... - (gdaustin) - Aug. 11, 2003, 12:03:54 AM EDT
                 Code sharing vs. polymorphism - (johnu) - Aug. 5, 2003, 04:42:32 PM EDT

That’s a great, great story. Therefore, it’s too good to be true.
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