Anders Andersson wrote:
Hello
I want to concatinate (I apologize for bad English, but it is not my native language) a list of strings to a string. I could use (I think):
s = "" map(lambda x: s.append(x), theList)
But I want to do something like (I think that the code above is clumsy):
s = reduce("concatinating function", theList, "")
And here is the questions: What to replace "concatinating function" with? Can I in some way give the +-operator as an argument to the reduce function? I know operators can be sent as arguments in Haskell and since Python has functions as map, filter and listcomprehension etc. I hope it is possible in Python too. In Haskell I would write:
foldr (++) []
Thank you for answering!
>>> l = ["abc", "def", "ghi", "jkl"] >>> "".join(l) 'abcdefghijkl' >>> ", ".join(l) 'abc, def, ghi, jkl' >>>
regards Steve -- Steve Holden http://www.holdenweb.com/ Python Web Programming http://pydish.holdenweb.com/ Holden Web LLC +1 703 861 4237 +1 800 494 3119 -- http://mail.python.org/mailman/listinfo/python-list
