title: Ethereum: calls for self -failure when the structures are successful
Introduction
Ethereum is a decentralized platform that allows developers to create and deploy intelligent contracts, However, a common problem that can arise in Ethereum is when a contract is called using the method “.
The problem
When a contract is called using the. However, during the passage of a structure,
The Resulting Error Output is:
`Solidity
Error: Decoding Outlet Failure: Error: Unauthorized Data Type: 'struct'
'
A contract, because the contract can try to access the members of the structure or try to attibute value to one of its members.
The problem
In solidity 0.6.0 and subsequent versions, the keyword "data" has been removed from the structures. This means that when you use. Calle, you can no longer transmit structures directly as arguments to functions. Instead, you must use tables or other data structures to represent the structure fields.
A structure of a structure of a structure:
`Solidity
Pragma Solidity ^ 0.6.0;
Struct Mystruct {
uint256 x;
y;
}
Myfunction Function () Pure Returns (MyStruct) {
Return mystruct (x: 1, y: "hello");
}
'
The Solution
To Solve This Problem, Developers Can Use The Following Approaches:
- Create a new function which returns a table :
- Use paintings instead of structures : replace the structuremystructure by a table:
`Solidity
Pragma Solidity ^ 0.6.0;
Structure myarray {
uint256 x;
y;
}
Myfunction Function () Pure Returns (Myarray) {
Return Myarray (x: 1, y: "hello");
}
` ‘
.
Conclusion
” The structures.
Additional Resources
- Solidity documentation: [
- Documentation Openzeppelin: [
Note:
