如果有多个消息且元素settlementDesc不包含未涵盖或无效的数量，则尝试编写逻辑，反之亦然。我应该能够使用notCovered / invalidQuantity字符串删除重复项并保留。
数据
All these scenarios should be if messages are more then 1 in length
Scenario#1
const messages = [
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
},
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
},
{
"settlementCode": "359",
"settlementDesc": "Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
}
];
Scenario#2
const messages = [
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
},
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
}
];
main.js
const validateEntries = (messages) => {
let filteredMsg;
if (!messages) {
return [];
}
if(messages.length > 1) {
console.log("Multiple messages");
const response = [];
let bRet = false;
const mulitpleMessages = messages.reduce((acc,curr) => {
if (/not covered|invalid quantity/i.test(curr.settlementDesc !== true) {
bRet = true;
}
if(bRet) {
if( acc.settlementCode == curr.settlementCode) {
return acc;
}
}
return curr;
});
filteredMsg = mulitpleMessages;
} else {
filteredMsg = messages.filter((item) => {
if (/not covered|invalid quantity/i.test(item.settlementDesc)) {
return true;
} else {
return item.settlementDesc.includes(':');
}
});
}
return filteredMsg;
};
console.log(validateEntries(messages));
预期的食物
Scneario#1 ouput
[
{
"settlementCode": "359",
"settlementDesc": "Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
}
];
Scenario#2
[
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
}]
错误
let bRet = false;
38 | const mulitpleMessages = messages.reduce((acc,curr) => {
> 39 | if (/not covered|invalid quantity/i.test(curr.settlementDesc !== true) {
|
41 | bRet = true;
42 | }
答案 0 :(得分：1)
您可以使用嵌套的filter()
const messages = [ { "settlementCode": "58", "settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card." }, { "settlementCode": "58", "settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card." }, { "settlementCode": "359", "settlementDesc": "Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card." } ];
const res = messages.filter(x =>
messages.filter(a => a.settlementCode === x.settlementCode).length === 1
);
console.log(res)
答案 1 :(得分：0)
您仅在此行缺少右括号：
if (/not covered|invalid quantity/i.test(curr.settlementDesc !== true) {
像这样修复它：
const messages = [
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
},
{
"settlementCode": "58",
"settlementDesc": "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
},
{
"settlementCode": "359",
"settlementDesc": "Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."
}
];
const validateEntries = (messages) => {
let filteredMsg;
if (!messages) {
return [];
}
if(messages.length > 1) {
console.log("Multiple messages");
const response = [];
let bRet = false;
const mulitpleMessages = messages.reduce((acc,curr) => {
if (/not covered|invalid quantity/i.test(curr.settlementDesc !== true)) {
bRet = true;
}
if(bRet) {
if( acc.settlementCode == curr.settlementCode) {
return acc;
}
}
return curr;
});
filteredMsg = mulitpleMessages;
} else {
filteredMsg = messages.filter((item) => {
if (/not covered|invalid quantity/i.test(item.settlementDesc)) {
return true;
} else {
return item.settlementDesc.includes(':');
}
});
}
return filteredMsg;
};
console.log(validateEntries(messages));
您的代码运行正常
答案 2 :(得分：0)
令我惊讶的是，这需要一些更干净，更完善的代码。我正在想像这样的解决方案：
const transform = combine (
uniqueBy (sameProp ('settlementCode') ),
filter (not (propMatches ('settlementDesc', ['not covered', 'invalid quantity'])))
)
所有这些辅助功能将做什么？
这个想法是combine将使用两个函数，并返回一个新函数，该函数将一个函数的输出传递给另一个函数。为此有一个标准名称compose，所以我实际上会选择这个名称。
sameProp('foo')将接受两个对象，并判断它们是否具有相等的foo属性。因此sameProp将接受一个属性名称并返回该二进制谓词。 （谓词只是返回true或false的函数）
uniqueBy将使用一个二进制谓词和一个列表，并删除基于该谓词的所有重复项，仅保留第一个。
filter可以将Array.prototype.filter提升为独立功能。
propMatches将接受一个属性名称和一个字符串列表，返回一个接受对象的函数，并报告该对象的names属性是否与这些字符串之一匹配的正则表达式。
最后，not会简单地接受一个谓词，然后返回第二个谓词，如果第一个谓词返回false，则返回第二个谓词；如果第一个返回{{1}，则返回true }}。 （也可以称为true，false或invert。）
这是一个实现：
opposite
请注意，辅助功能，尤其是前四个功能非常简单。它们都是（可能complement除外）所有可能在应用程序的许多部分重复使用的代码。因此，它们可以存放在您的内部实用程序库中，仅保留const compose = (f, g) =>
(x) => f(g(x))
const filter = (fn) => (xs) =>
xs.filter(fn)
const not = (f) =>
(x) => !f(x)
const sameProp = (prop) => (a, b) =>
a [prop] === b [prop]
const uniqueBy = (pred) => (xs) =>
xs .filter ( (x, i) => xs .findIndex (y => pred (x, y) ) == i )
const propMatches = (prop, vals, re = new RegExp (vals .join ('|'), 'i') ) =>
(x) => !! re .test ( x [prop] )
const transform = compose (
uniqueBy (sameProp ('settlementCode')),
filter (not (propMatches ('settlementDesc', ['not covered', 'invalid quantity'])))
)
const messages = [{settlementCode: "58", settlementDesc: "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."}, { settlementCode: "58", settlementDesc: "Not Covered Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."}, { settlementCode: "359", settlementDesc: "Needs prior authorization: System could not process your request. Call us at the toll-free number on your benefit ID card."}]
console .log (
transform (messages)
)（还有可能是propMatches）作为此要求的实现的一部分。
您可能还需要处理其他事情。我们可以轻松地想象一个transform的版本可以使用任意数量的函数，也可以以相反的顺序使用它们。我们还可以想象，我们可能想将一个以上的参数传递给由此产生的函数。但是我们可以在以后需要时添加这些增强功能。
或者，我们可以使用提供此类功能的实用程序库。我是Ramda的作者之一，该图书馆提供了compose（扩展版）propMatches的一个版本，称为eqProps，这是一个略有不同的{ 3}}，uniqBy和称为filter的compose版本。对我来说，拥有这些始终可用的有用功能使我的许多编码工作变得更加简单。