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diff --git a/docs/frequently-asked-questions.rst b/docs/frequently-asked-questions.rst index f3c5b1f7..d263e0c6 100644 --- a/docs/frequently-asked-questions.rst +++ b/docs/frequently-asked-questions.rst @@ -9,35 +9,6 @@ This list was originally compiled by `fivedogit <mailto:fivedogit@gmail.com>`_. Basic Questions *************** -What is the transaction "payload"? -================================== - -This is just the bytecode "data" sent along with the request. - - -Create a contract that can be killed and return funds -===================================================== - -First, a word of warning: Killing contracts sounds like a good idea, because "cleaning up" -is always good, but as seen above, it does not really clean up. Furthermore, -if Ether is sent to removed contracts, the Ether will be forever lost. - -If you want to deactivate your contracts, it is preferable to **disable** them by changing some -internal state which causes all functions to throw. This will make it impossible -to use the contract and ether sent to the contract will be returned automatically. - -Now to answering the question: Inside a constructor, ``msg.sender`` is the -creator. Save it. Then ``selfdestruct(creator);`` to kill and return funds. - -`example <https://github.com/fivedogit/solidity-baby-steps/blob/master/contracts/05_greeter.sol>`_ - -Note that if you ``import "mortal"`` at the top of your contracts and declare -``contract SomeContract is mortal { ...`` and compile with a compiler that already -has it (which includes `Remix <https://remix.ethereum.org/>`_), then -``kill()`` is taken care of for you. Once a contract is "mortal", then you can -``contractname.kill.sendTransaction({from:eth.coinbase})``, just the same as my -examples. - If I return an ``enum``, I only get integer values in web3.js. How to get the named values? =========================================================================================== @@ -45,31 +16,6 @@ Enums are not supported by the ABI, they are just supported by Solidity. You have to do the mapping yourself for now, we might provide some help later. -Can state variables be initialized in-line? -=========================================== - -Yes, this is possible for all types (even for structs). However, for arrays it -should be noted that you must declare them as static memory arrays. - -Examples:: - - pragma solidity >=0.4.0 <0.6.0; - - contract C { - struct S { - uint a; - uint b; - } - - S public x = S(1, 2); - string name = "Ada"; - string[4] adaArr = ["This", "is", "an", "array"]; - } - - contract D { - C c = new C(); - } - How do structs work? ==================== |