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fredag 23 oktober 2020 kl. 13:22:55 UTC+2 skrev Frank Millman: > On 2020-10-23 12:41 PM, mikael petterson wrote: > > Hi, > > > > I need to use the following code but in java. > > > > END_DELIM = '\n##\n' > > def start_delim(data_len): return '\n#%s\n' % (data_len) > > data = "%s%s%s" % (start_delim(len(data)), data, END_DELIM) > > > > Can anyone help me to understand what it means: > > > > I am guessing now: > > > > a function defined "start_delim" takes the length of a data string. > > function does modulo on something. This something I am not sure of > > :-) > > Does '\n#%s\n' will this be evaluated to a number when %s i replaced with data_len? > > > > Then the result is used as one parameter in "%s%s%s" > > start_delim then for the other > > data > > END_DELIM > > > I think it is simpler than that. > > >>> > >>> '\n#%s\n' % 2 > '\n#2\n' > >>> > > All it is doing is replacing '%s' with the length of the string. > > So the result is the concatenation of - > > 1. '\n' + '#' + length of string + '\n' as the start delimiter > > 2. the string itself > > 3. '\n' + '#' + '#' + '\n' as the end delimiter > > Frank Millman Yes that was simpler than I thought. Thanks a lot!

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