bytes value while initialising struct

Question

struct Proposal{
    uint32 id;
    string text;
    bytes docs;
    bool selected;
    uint expectedBudget;
    address submitter;
}



// _text and _expectedBudget already define.

Proposal proposal = Proposal({
                      id:getId(),
                      text:_text,
                      docs:<what_should_I_use_here>,
                      selected:false,
                      expectedBudget:_expectedBudget,
                      submitter: msg.sender
                    })

I want to set something like null for docs. what to use in solidity?

Answer 1

Something like that should work

Proposal proposal = Proposal({
                  id:getId(),
                  text:_text,
                  docs:'',
                  selected:false,
                  expectedBudget:_expectedBudget,
                  submitter: msg.sender
                })

The value of docs will be 0x.

That being said, consider using bytes with a fixed length like bytes32, it is much cheaper.

See the official documentation for more precision.