boon/src/main/java/org/boon/StringScanner.java
public static double parseDouble( String buffer, int from, int to ) {
        return CharScanner.parseDouble( FastStringUtils.toCharArray(buffer), from , to );
    }
public static double parseDouble( String buffer, int from, int to ) {
        return CharScanner.parseDouble( FastStringUtils.toCharArray(buffer), from , to );
    }
parse a double
@param buffer input string
@return value