javascript - 如何在函数式编程中访问两个参数

Question

我有一个这样的管道

pipe(
    getUserData,
    getLocationData,
    someFunctionThatNeedBothUserAndLocationData
)(input)

我需要一个可以访问用户和位置数据的函数，如下所示

function someFunctionThatNeedBothUserAndLocationData(user, location){
    // do something
}

我怎样才能在函数式编程中做类似的事情？

Answer 1

对于pipe来说不可能，因为后续函数是一元的(它们将前一个函数的结果作为参数)。我认为收敛函数在这里很有帮助!

const log = (user, location) => {
  console.log(`${user.name} is in ${location}`);
};


const getUserData = () => ({ name: 'Giuseppe' });
const getUserLocation = () => 'Bologna';

R.converge(log, [
  getUserData,
  getUserLocation,
])();

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