Method write

include/VectorDisplay.h:25–35

public:    
    virtual size_t write(uint8_t c) = 0;
    virtual size_t write(const uint8_t* s, size_t length) {
        size_t wrote = 0;
        while (length > 0) {
            size_t b = write(*s++);
            if (b <= 0)
                break;
            b++;
            length--;
        }
        return wrote;
    }
    
    virtual size_t write(const char* s) {
        return write((uint8_t*)s, strlen(s));