Method add

java/lib/src/main/java/io/github/ccxt/Helpers.java:361–376

(Object a, Object b)

    }

    public static Object add(Object a, Object b) {
        a = normalizeIntIfNeeded(a);
        b = normalizeIntIfNeeded(b);

        if (a instanceof Long && b instanceof Long) {
            return ((Long) a) + ((Long) b);
        } else if (a instanceof Double || b instanceof Double) {
            return toDouble(a) + toDouble(b);
        } else if (a instanceof String && b instanceof String) {
            return ((String) a) + ((String) b);
        } else if (a instanceof String || b instanceof String) {
            return String.valueOf(a) + String.valueOf(b);
        }

        return null;
    }

    public static String add(String a, String b) {
        return a + b;