c boost split string

Question

I m using the boost  split method to split a string as this   I first make sure to include the correct header to have access to boost  split    include  lt boost algorithm string hpp gt    then   vector lt string gt  strs  boost  split strs line boost  is any of   t       and the line is like   test   test2   test3    This is how I consume the result string vector   void printstrs vector lt string gt  strs        for vector lt string gt   iterator it   strs begin   it  strs end     it                cout  lt  lt   it  lt  lt   -------              cout  lt  lt  endl      But why in the result strs I only get  test2  and  test3   shouldn t be  test    test2  and  test3   there are  t  tab  in the string   Updated Apr 24th  2011  It seemed after I changed one line of code at printstrs I can see the first string  I changed   cout  lt  lt   it  lt  lt   -------     to   cout  lt  lt   it  lt  lt  endl    And it seemed  -------  covered the first string somehow

User · Answer

My best guess at why you had problems with the ----- covering your first result is that you actually read the input line from a file. That line probably had a \r on the end so you ended up with something like this:

-----------test2-------test3

What happened is the machine actually printed this:

test-------test2-------test3\r-------

That means, because of the carriage return at the end of test3, that the dashes after test3 were printed over the top of the first word (and a few of the existing dashes between test and test2 but you wouldn't notice that because they were already dashes).

User · Answer

The problem is somewhere else in your code  because this works   string line  test ttest2 ttest3    vector lt string gt  strs  boost  split strs line boost  is any of   t      cout  lt  lt     size of the vector     lt  lt  strs size    lt  lt  endl      for  size t i   0  i  lt  strs size    i        cout  lt  lt  strs i   lt  lt  endl    and testing your approach  which uses a vector iterator also works   string line  test ttest2 ttest3    vector lt string gt  strs  boost  split strs line boost  is any of   t      cout  lt  lt     size of the vector     lt  lt  strs size    lt  lt  endl  for  vector lt string gt   iterator it   strs begin    it    strs end      it        cout  lt  lt   it  lt  lt  endl      Again  your problem is somewhere else  Maybe what you think is a  t character on the string  isn t  I would fill the code with debugs  starting by monitoring the insertions on the vector to make sure everything is being inserted the way its supposed to be   Output     size of the vector  3 test test2 test3

[c++] c++ boost split string

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