Questions tagged [solidity-0.5.x]

Solidity is a contract-oriented, high-level language whose syntax is similar to that of JavaScript and it is designed for writing smart contracts in Ethereum to run on the EVM. Solidity is statically typed, supports inheritance, libraries and complex user-defined types among other features. Solidity version 0.5.0 is a specific version that includes a number of changes to the language and introduce new features.

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1answer
104 views

Public variable getter shows as transaction in Remix

As of Solidity 0.6.0+ compiler, my remix shows getter functions, built by public variables, as transactions and, therefore, do not return the value. I searched the solidity 0.6.0 breaking changes but ...
4
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1answer
132 views

Is pre 0.5.0 keccak256(a,b) equivalent to post 0.5.0 keccak256(abi.encodePacked(a,b))?

In pre 0.5.0 Solidity if you wanted to hash a some set of data you would do keccak(a, b, c). Post 0.5.0 keccak only takes 1 arg and it is suggested to use keccak(abi.encodePacked(a,b,c)) instead But ...
3
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1answer
838 views

Timeout exceeded during the transaction confirmation process

I am trying to figure out the right syntax for solc 0.5.7 and web3 1 beta 52 Follow my source code: contract.sol pragma solidity ^0.5; contract Hello { string public message; constructor (...
1
vote
1answer
213 views

what is 'UnimplementedFeatureError: Not yet implemented - FixedPointType' error?

what is 'UnimplementedFeatureError: Not yet implemented - FixedPointType' error in solidity while compiling through truffle ? How to fix it ? Using solidity compiler version - 0.5.9
0
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1answer
44 views

Contract Data Retrival

Whenever I do modification in a contract and deploy the contract again, the data in the existing contract is completely lost as the new contract is deployed in a new address. For instance, I have a ...
0
votes
1answer
77 views

Deposit event is not call while contract get token

My contract pragma solidity ^0.5.0; contract Transfereventaction { event Deposit( address indexed _from, bytes32 indexed _id, uint _value ); function deposit(...