1

I'm having problem to understand why the method push() does't work on Remix using Solidity 0.6.

I have read the documentation about arrays fixed size and dynamic size doc reference

for example in this code:

pragma solidity ^0.6.0;

contract Prova
{

   function prova() public{

      uint[] memory array;
      array.push(4);

   }
}

I always get the error: :

TypeError: Member "push" is not available in uint256[] memory outside of storage.

Someone can show me sole example about arrays in solidity. I'm learning. Thanks a lot.

2

You are trying to use .push with a transient memory instance of an array. It has to be a storage variable.

pragma solidity ^0.6.0;

contract Prova
{
   uint[] public array;

   function prova() public {
      array.push(4);
   }
}

Or, for giggles:

pragma solidity ^0.6.0;

contract Prova
{
   uint[] public array;

   function prova(uint number) public {
      array.push(number);
   }
}

It is declared globally, so storage is implied. I added public so you can inspect it with array(uint row).

Hope it helps.

1
  • ok perfect, my problem was that I declared the array inside the function ... – alfo888_ibg Apr 14 '20 at 17:15

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