On 01/15/2015 10:29 PM, Ian Kelly wrote: > On Thu, Jan 15, 2015 at 9:00 PM, Chris Angelico <ros...@gmail.com> wrote: >> My first response was going to be "Well, you can always add another >> layer of indirection to try to solve your problem", but then I went >> and looked up builders on Wikipedia. Now I'm confused. What can you do >> with a builder that you can't do with a constructor? > > In Java you have to write a separate constructor for every conceivable > combination of arguments. If there are a lot of optional arguments, > that's an exponentially large number of constructors. The builder > pattern provides a solution to that problem. > > In Python you just have one initializer with defaults for the optional > arguments, so it's not an issue.
Which seems to confirm my understanding that these patterns are in large part a response to limitations in the language, which certainly doesn't engender a fondness for the Java. -- https://mail.python.org/mailman/listinfo/python-list
