Terran Melconian wrote: > * Why are there no real mutable strings available? > > I found MutableString in UserString, but further research > indicates that it is horribly inefficient and actually just > wraps immutable strings for the implementation.
Did you measure such impact on your application? Also see http://www.skymind.com/~ocrow/python_string/ > I want to be able to accumulate a string with +=, not by going > through an intermediate list and then doing ''.join(), because > I think the latter is ugly. >>> yummy = "ham" >>> yummy += "eggs" >>> yummy 'hameggs' > There are also times when I'd like to use the string as a > modifiable buffer. Use a list instead. When done with modifications you may concatenate its contents to a string using "".join(my_list). > * What's the best way to initialize a list of lists? > [...] > l=[[None]*5 for i in range(5)] > > I don't particularly like it, though. It bothers me to have > to explain list comprehensions, which are a moderately > advanced feature conceptually, just to initialize an array. Look at "lower level" HLLs. In C++, you'd have to use int my_array[5][5]; for (int i=0; i<5; ++i) for (int j=0; j<5; j++) my_array[i][j] = -1; Personally, I like list comprehensions much better. Regards, Björn -- BOFH excuse #254: Interference from lunar radiation -- http://mail.python.org/mailman/listinfo/python-list
