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VB.Net Tutorial/Regular Expressions/Match Number - История изменений
2026-04-05T05:43:28Z
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в 16:40, 26 мая 2010
2010-05-26T16:40:30Z
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Admin: 1 версия
2010-05-26T12:57:34Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Match and extract numbers==<br />
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<br />
<source lang="vbnet">Imports System.Text.RegularExpressions<br />
Public Class Tester<br />
Public Shared Sub Main<br />
Dim source As String = _<br />
"This 321.0 string -0.020 contains " & _<br />
"3.0E-17 several 1 2. 34 numbers"<br />
Dim parser As New _<br />
Regex("[-+]?([0-9]*\.)?[0-9]+([eE][-+]?[0-9]+)?")<br />
Dim sourceMatches As MatchCollection = parser.Matches(source)<br />
Dim counter As Integer<br />
Console.WriteLine(sourceMatches.Count.ToString() & vbNewLine)<br />
For counter = 0 To sourceMatches.Count - 1<br />
Console.WriteLine(sourceMatches(counter).Value.ToString())<br />
Console.WriteLine(CDbl(sourceMatches(counter).Value).ToString())<br />
Next counter<br />
<br />
End Sub<br />
<br />
End Class</source><br />
<pre class=codeResult>6<br />
321.0<br />
321<br />
-0.020<br />
-0.02<br />
3.0E-17<br />
3E-17<br />
1<br />
1<br />
2<br />
2<br />
34<br />
34</pre></div>
Admin