= !StringChain =

Sometimes you want to accumulate data from some source while at the same time processing the data that arrived first. The naive way to do it in Python is like this:

{{{
def __init__(self):
    self.accum = '' # Will hold all unprocessed bytes

def add_data(self, some_more_data):
    # some_more_data is a string
    self.accum += some_more_data

def process_some(self, how_much):
    some = self.accum[:how_much]
    del self.accum[:how_much]
}}}

== Starting Points ==

 * TracGuide --  Built-in Documentation
 * [http://trac.edgewall.org/ The Trac project] -- Trac Open Source Project
 * [http://trac.edgewall.org/wiki/TracFaq Trac FAQ] -- Frequently Asked Questions
 * TracSupport --  Trac Support

For a complete list of local wiki pages, see TitleIndex.