Question

我有这个mapStateToProps并且我想打印一个console.log（user.isLogged），但我需要更改它以使用显式返回而不是隐式。我怎么能改变这个？

const mapStateToProps = ({ user, retrospectives }) => (
  {
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  }
);

Answer 1

而不是()使用带有return语句的{}

const mapStateToProps = ({ user, retrospectives }) => {
  console.log(user);
  return {
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  }
};

Answer 2

const mapStateToProps = ({ user, retrospectives }) => console.log(user.isLogged) || ({
    userData: user.userData,
    isLogged: user.isLogged,
    organizations: user.organizations,
    retroFinished: retrospectives.retrospective.finished,
    linkToRetro: retrospectives.joinedRetro,
  });

Answer 3

只需使用花括号而不是parens。

还使用xAxisPath.addLines(between: [CGPoint(x: padding, y: rect.size.height - 31), CGPoint(x: axisWidth, y: rect.size.height - 31)])声明。

return

如何更改mapStateToProps以使用显式返回

3 个答案: