[boost] StringAlgo::split issue

From: Dirk Gregorius (dirk_at_[hidden])
Date: 2004-10-16 10:38:31

Hi,

I used the split function on the following string:

vector<string> tokens;
string str= "( 448 448 64 ) ( 448 0 64 ) ( 0 448 64 ) name  0 0 0 0.5 0.5 0 
0 0";
split( tokens, str, is_any_of( ()), token_compress_on );  // I pass 'space' 
, '(' and ')' into is_any_of()

I was supposed to get 18 tokens. The first nine values, the string "name" 
and the remaining eight digits. "split" always returns a string vector 
containing 19 tokens, where the first element of the vector is an empty 
string. Why does the function insert empty strings into the collection? Can 
I use split to obtain the 18 wanted tokens?

-Dirk