内容简介：Solidity 0.6.11 更新本文参与登链社区写作激励计划 ，好文好收益，欢迎正在阅读的你也加入。
Solidity 0.6.11 更新
Solidity 0.6.11 更新：
Solidity v0.6.11
adds inheritance to NatSpec comments, improves debugging data output and fixes some minor issues with opening up calldata
for non-external functions.
Notable New Features
NatSpec Inheritance and on Events
NatSpec comments are a way to describe the behaviour of a function to end-users. It also allows to provide more detailed information to developers.
One regular use-case is that you document the behaviour of an interface and then implement the interface in a derived contract. Previously, you had to repeat the documentation in the derived contract. This is now obsolete: The compiler will automatically inherit the documentation of the base function if the derived function does not provide any NatSpec tag.
If you provide any of the tags ( @param
, @dev
, …), then nothing will be inherited. The next release will provide a feature to explicitly inherit from a certain base also in that case, so stay tuned!
Furhermore, NatSpec is now supported on events.
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.11;
interface Gathering {
/// The address `participant` just registered for the gathering.
event Registered(address participant);
/// Registers `msg.sender` to take part in the gathering.
function register() external;
}
contract MyGathering is Gathering {
mapping(address => bool) public participants;
function register() public override {
participants[msg.sender] = true;
emit Registered(msg.sender);
}
}
The derived contract MyGathering
in the example code above will produce the following userdoc:
{
"events": {
"Registered(address)": {
"notice": "The address `participant` just registered for the gathering."
}
},
"kind": "user",
"methods": {
"register()": {
"notice": "Registers `msg.sender` to take part in the gathering."
}
},
"version": 1
}
Unit Denomination gwei
You can now use gwei
as a unit denomination alongside wei
, szabo
, finney
and ether
:
reqire(msg.value >= 10 gwei);
Solidity 0.6.11 更新：
Solidity v0.6.11
adds inheritance to NatSpec comments, improves debugging data output and fixes some minor issues with opening up calldata
for non-external functions.
Notable New Features
NatSpec Inheritance and on Events
NatSpec comments are a way to describe the behaviour of a function to end-users. It also allows to provide more detailed information to developers.
One regular use-case is that you document the behaviour of an interface and then implement the interface in a derived contract. Previously, you had to repeat the documentation in the derived contract. This is now obsolete: The compiler will automatically inherit the documentation of the base function if the derived function does not provide any NatSpec tag.
If you provide any of the tags ( @param
, @dev
, …), then nothing will be inherited. The next release will provide a feature to explicitly inherit from a certain base also in that case, so stay tuned!
Furhermore, NatSpec is now supported on events.
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.11;
interface Gathering {
/// The address `participant` just registered for the gathering.
event Registered(address participant);
/// Registers `msg.sender` to take part in the gathering.
function register() external;
}
contract MyGathering is Gathering {
mapping(address => bool) public participants;
function register() public override {
participants[msg.sender] = true;
emit Registered(msg.sender);
}
}
The derived contract MyGathering
in the example code above will produce the following userdoc:
{
"events": {
"Registered(address)": {
"notice": "The address `participant` just registered for the gathering."
}
},
"kind": "user",
"methods": {
"register()": {
"notice": "Registers `msg.sender` to take part in the gathering."
}
},
"version": 1
}
Unit Denomination gwei
You can now use gwei
as a unit denomination alongside wei
, szabo
, finney
and ether
:
reqire(msg.value >= 10 gwei);
本文参与登链社区写作激励计划 ，好文好收益，欢迎正在阅读的你也加入。
- 发表于 24分钟前
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- 分类：Solidity
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