bearophile wrote: > Andrei Alexandrescu: >> Pascalize!S s; >> s.foo(); // works >> s.Foo(); // works too >> s.fOo(); // yup, works again > > I can show something even more extreme :-) > > What we are discussing in this thread is named the __getattr__ method in > Python: > http://docs.python.org/reference/datamodel.html#object.__getattr__ > > Note that in Python there's something even more powerful, __getattribute__: > http://docs.python.org/reference/datamodel.html#object.__getattribute__ > > So I have created this, that I actually use in a large Graph class of mine > that has many methods: > http://code.activestate.com/recipes/409000/ > Such class can be used from the interactive shell too, to play with graphs in > an interactive way, modify them, plot them, etc. > Often you may not remember the name of a method you need, or you may mistype > it. In such situation __getattr__ is being called. It collects the class > method names, removed the useless ones, and performs a similarity search > between the given wrong method name and the strings in that list. Then > returns the 4-5 most similar ones, each one followed by their docstring, that > shows the function signature and the purpose of the method. So you can > usually find the method you were looking for, and use it. This is useful both > when using such Graph class from the command line and when you are writing > code without an IDE that helps you finding method names. > That Python code of mine becomes doable in D too (using for example my very > fast approximate string distance. This is a case where you don't need the > list of changes, but just the distance number. So superdan can rest in peace). > > Bye, > bearophile
There's an interesting idea... Instead of "No member 'foo'", you could have "No member 'foo'; did you mean 'far' or 'fur'?" -- Daniel
