How I do Split?

This is a discussion on How I do Split? within the C++ Programming forums, part of the General Programming Boards category; How I do split in C++ ? Ex: test1;;test2;;test3 How do I take those and stick those in variables ? ...

  1. #1
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    How I do Split?

    How I do split in C++ ?

    Ex:

    test1;;test2;;test3

    How do I take those and stick those in variables ?

    In perl would be

    my($var1,$var2,$var3)=split(/;;/, $input);

    How do I do that in c++ ?

  2. #2
    C++ Witch laserlight's Avatar
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    I never thought of it myself though I use it PHP, so I decided to write an implementation:

    Code:
    bool split(std::string sep, std::string str, std::vector<std::string> &array) {
    	int seplen = sep.length();
    	if (seplen < 1)
    		return false;
    	int len = str.length();
    	int find = 0, prev = 0;
    	for (;;) {
    		if (find = str.find(sep, find) == std::string::npos) {
    			array.push_back(str.substr(prev, len - prev));
    			return true;
    		}
    		else {
    			array.push_back(str.substr(prev, find - prev));
    			find += seplen;
    			prev = find;
    		}
    	}
    	return false;
    }
    probably could be optimised though.
    The difference would be that we would be passing a vector of strings by reference, and then accessing the elements of the vector, rather than directly assigning the values to individual variables.
    Last edited by laserlight; 11-10-2003 at 04:14 AM.

  3. #3
    It's full of stars adrianxw's Avatar
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    strtok()
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