Arduino EEProm.h code

Question

What does this bit of code do?

EERef( const int index )
        : index( index ) {}

It's inside a struct such as this...

/***
EERef class.

This object references an EEPROM cell.
Its purpose is to mimic a typical byte of RAM, however its storage is the EEPROM.
This class has an overhead of two bytes, similar to storing a pointer to an EEPROM cell.
***/

struct EERef{

EERef( const int index )
    : index( index ) {}

//Access/read members.
uint8_t operator*() const
{ 
    return eeprom_read_byte( (uint8_t*) index ); 
}
operator const uint8_t() const       
{ 
    return **this; 
}

..... etc....

I've totally forgotten my C++. Someone jog my memory please?

Please do not tag C++ questions with the C tag. The C tag is for C questions. — Lightness Races in Orbit, Apr 23 '16 at 17:31
_"I've totally forgotten my C++."_ Then pick up your textbook and remind yourself. Prior research is required for questions on Stack Overflow. — Lightness Races in Orbit, Apr 23 '16 at 17:32

score 0 · Answer 1 · edited Jun 20 '20 at 09:12

0

What does this bit of code do?

EERef( const int index ) : index( index ) {}

That particular line of code is a constructor for struct EERef that takes a parameter and initializes the index member of EERef with the parameter value.

For reference: Constructors and Initializer Lists

edited Jun 20 '20 at 09:12

Community

1
1

answered Apr 23 '16 at 17:31

Jonathon Ogden

1,562
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Arduino EEProm.h code

1 Answers1