[Ethereum] Variadic / optional function params in solidity

solidity

I didn't find a way to have optional arguments in the solidity docs so i'm wondering if anyone has found a working around to this ?

All i can think of are internal functions with " empty " params but that's going to be ugly very fast.

As anyone found a working around to this ?

Best Answer

Unfortunately solidity does not have the ability to add variable/ optional params. Strange enough there is away to add anonymous params, i.e. with no name.

Related Solutions

Solidity totalSupply() Error – Resolving Signature Conflict in ERC20 Contract

I think your function return argument should be renamed - this is what the compiler is really complaining about:

function totalSupply() constant returns (uint256 something) {

It's actually optional to name the return argument here; you can just put its type:

function totalSupply() constant returns (uint) {

[For future reference, it would be easier to check if could post the code itself rather than an image of the code so we can cut and paste into the compiler.]

Solidity Update – Why call() Function Stopped Working in Version 0.5.0

Make sure contractAddress is of type address payable. And yes, you'll need to provide an argument. E.g.:

address payable contractAddress = ...;
contractAddress.call.value(1 ether).gas(53000)("");

Best Answer

Related Solutions

Solidity totalSupply() Error – Resolving Signature Conflict in ERC20 Contract

Solidity Update – Why call() Function Stopped Working in Version 0.5.0

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