Question

我有以下字符串：

=+[^=]+=+\n([\w\W]+\n)(?==+[^=]+=+\n)

现在我要创建类似以下的字符串：

"Parent1:Child1"
"Parent1:Child2"
"Parent1:Child3"
"Parent1:Child4"

"Parent2:Child1"
"Parent2:Child2"
"Parent2:Child3"
"Parent2:Child4"

"Parent3:Child1"
"Parent3:Child2"

我尝试了很多方法，但是都无法正常工作。有帮助吗？

Answer 1

Linq方法

string[] input = { "Parent1:Child1", "Parent1:Child2", "Parent1:Child3", "Parent1:Child4",
                   "Parent2:Child1", "Parent2:Child2", "Parent2:Child3", "Parent2:Child4",
                   "Parent3:Child1", "Parent3:Child2"};

首先我Split() :的每一项
然后我GroupBy()拆分结果的第一部分（=“ ParentX”）
最后，我将每个组密钥与所有孩子中的:和Join()一起赋予

代码：

string[] result = input.Select(x => x.Split(':'))
                       .GroupBy(y => y.First())
                       .Select(y => y.Key + ":" + string.Join(",",y.Select(z => z.Last())))
                       .ToArray();

Answer 2

您可以使用下面的代码来获得以上效果，

offers

在这里，我正在使用ToLookup（）将所有匹配的父级作为Key，并将其子级作为值。请阅读有关ToLookup here

的更多信息

输出看起来像这样-

mappedBy = "order1"

Answer 3

您可以用[Fact] public void RetrievingACustomer_ShouldReturnTheExpectedCustomer() { // Arrange var expectedCustomer = new Customer { FirstName = "Silence", LastName = "Dogood", Address = new Address { AddressLineOne = "The New-England Courant", AddressLineTwo = "3 Queen Street", City = "Boston", State = "MA", PostalCode = "02114" } }.ToExpectedObject(); // Act var actualCustomer = new CustomerService().GetCustomerByName("Silence", "Dogood"); // Assert expectedCustomer.ShouldEqual(actualCustomer); }分割每个字符串。使用:。键将包含父级详细信息，值将包含子级

更易读易懂的东西

Dictionary<string, List<string>>

概念证明：.net Fiddler

如何拆分字符串并相对于父级制作一个

3 个答案: