My-Notes-Compilation/LinQChains.md.html at master · Archive-42/My-Notes-Compilation · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
  <head>
    <meta charset="utf-8" />
    <meta name="generator" content="pandoc" />
    <meta
      name="viewport"
      content="width=device-width, initial-scale=1.0, user-scalable=yes"
    />
    <title>LinQChains.md</title>
    <style type="text/css">
      code {
        white-space: pre-wrap;
      }
      span.smallcaps {
        font-variant: small-caps;
      }
      span.underline {
        text-decoration: underline;
      }
      div.column {
        display: inline-block;
        vertical-align: top;
        width: 50%;
      }
    </style>
  </head>
  <body>
    <h1 id="some-fun-with-regex-and-linq">Some Fun with Regex and LinQ</h1>
    <h2 id="projectionmapping">Projection/Mapping</h2>
    <p>Project match result directly to formated result string</p>
    <pre><code>RegEx.Matches(myText,searchPatten).Cast&lt;Match&gt;().Select(x =&gt; $&quot;{x.Groups[1].Value} {x.Groups[2].Value}&quot;).ToArray();</code></pre>
    <h2 id="extend-result-with-select-new">Extend result with Select new</h2>
    <p>
      Here : Match a pattern and apply Replace on the resulting Match
      Collection, something like.
      <code>RegEx.MatchAndReplace(myText,searchPattern,replacePattern);</code>
    </p>
    <p>
      This allows us to get the Index and the Length of each match along what it
      would be replaced with.
    </p>
    <pre><code>use Regex.Matches() and then on every Match do a Regex.Replace()
var regex = new Regex(searchPattern);

var matches = regex.Matches(myText)
    .Cast&lt;Match&gt;()
    .Select(x =&gt; new
    {
        Match = x,
        ReplacedWith = regex.Replace(x.Value, replacePatten)
    })
    .ToArray();
    ```</code></pre>
  </body>
</html>