@Override
	public int hashCode() {
		int x = 0;
		for (int i : this.digits) {
			x = x << 1 | i;
		}
		return x;
	}
Parses a string like "1.0.2" into the version number.

@param num parameter string
ngrinder-core/src/main/java/net/grinder/util/VersionNumber.java