如何使用正则表达式比较两个列表? [英] How To Compare Two Lists Using Regex?

问题描述

我有两个列表，

1. List< string> IDList//DM-0016(ID:225)，LPG测试(ID:232)，18S1(ID:290)..
2. 列表< string>名称//DM-0016，LPG测试，18S1 ..

第二个列表与第一个列表基本相同，但是没有ID.我在多项选择"对话框中显示第二个列表，用户可以在其中选择多个项目.

我有一个正则表达式(@(?< = \(ID:)[0-9] +"); 这仅返回(ID :)内部的数字

我想基于此RegEX比较这两个列表，在这里，我只想要所选项目的ID.

例如::如果选择了 DM-0061 ，我将得到 225 .

解决方案

如果使用正则表达式，例如:

 (?< key>.*?)\ s \(ID:(?< value> [0-9] +)\) 

此正则表达式翻译为

• 命名捕获组 key ，由以下内容组成:
  • 任何字符均可重复多次，但应尽可能少
• 空白
• 文字(ID:
• 一个命名的捕获组 value ，包括:
  • 任何数字，一个或多个重复
• 文字)

您可以将原始列表投影到字典中，并轻松地将其用作查找:

  var list = new List< string>(){"DM-0016(ID:225)"，"LPG测试(ID:232)"，"18S1(ID:290)"};var regex = new Regex(@(?< key>.*?)\ s \(ID:(?< value> [0-9] +)\)"););var dict = list.Select(i => regex.Match(i)).ToDictionary(k =>k.Groups ["key"].Value，v =>v.Groups["value"].Value);Console.WriteLine(dict ["DM-0016"]);//写225 

实时示例: http://rextester.com/PMTUFW14656

I Have Two Lists,

1. List<string>IDList //DM-0016 (ID:225),LPG Test (ID:232), 18S1(ID:290)..
2. List<string>Names // DM-0016,LPG Test, 18S1..

The Second List is basically the same as the First but it doesn't have the IDs. I am Showing the Second List in a Multiple Choice Dialog, Where, user can select multiple items.

I have a Regular Expression (@"(?<=\(ID:)[0-9]+"); This returns only the the number inside (ID:)

I want to compare these two Lists based on this RegEX, Where, I want only the ID's of the selected items.

For Ex: If DM-0061 is selected i'll get 225.

解决方案

If you use a regular expression such as:

(?<key>.*?)\s\(ID:(?<value>[0-9]+)\)

This regex translates to

• A named capture group key consisting of:
  • Any character any number of repetitions, but as few as possible
• Whitespace
• Literal (ID:
• A named capture group value consisting of:
  • Any number, one or more repetitions
• Literal )

You can project your original list to a dictionary and easily use it as a lookup:

var list = new List<string>(){
    "DM-0016 (ID:225)","LPG Test (ID:232)", "18S1 (ID:290)"
};
var regex = new Regex(@"(?<key>.*?)\s\(ID:(?<value>[0-9]+)\)");

var dict = list.Select(i => regex.Match(i))
               .ToDictionary(
                    k => k.Groups["key"].Value, 
                    v => v.Groups["value"].Value);

Console.WriteLine(dict["DM-0016"]); // writes 225

Live example: http://rextester.com/PMTUFW14656

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