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PO
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Id
1741875
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0
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0
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2
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CreationDate
2009-11-16T12:26:33.677
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0
LastActivityDate
2009-11-16T13:38:48.790
LastEditDate
2009-11-16T13:38:48.790
LastEditorUserId
50476
OwnerUserId
50476
ParentId
1741810
PostTypeId
2
Score
4
ViewCount
0
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text
Body
<blockquote> My problem is that I need to split on + first, and then on ++. But if I split on + first, then the ++ instances are ruined and I end up with a mess. </blockquote> You could split on this regex first: <pre><code>(?<!\+)\+(?!\+) </code></pre> That way, only the 'single' <code>+</code>'s are being split on, leaving you to parse the <code>++</code>'s. Note that I am assuming that there cannot be three successive <code>+</code>'s. The regex above simple says: "split on the '+' only if there's no '+' ahead or behind it". Edit: After reading that there can be more than 2 successive <code>+</code>'s, I recommend writing a small grammar and letting a parser-generator create a lexer+parser for your little language. ANTLR can generate C# source code as well. Edit 2: But before implementing any solution (parser or regex) you'd first have to define what is and what isn't valid input. If you're going to let more than two successive <code>+</code>'s be valid, ie. <code>1+++++5</code>, which is [<code>1++</code>, <code>+</code>, <code>++5</code>], I'd write a little grammar. See this tutorial how that works: <a href="http://www.antlr.org/wiki/display/ANTLR3/Quick+Starter+on+Parser+Grammars+-+No+Past+Experience+Required" rel="nofollow noreferrer">http://www.antlr.org/wiki/display/ANTLR3/Quick+Starter+on+Parser+Grammars+-+No+Past+Experience+Required</a> And if you're going to reject input of more than 2 successive <code>+</code>'s, you can use either Lasse's or my (first) regex-suggestion.
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1. POHow to split this string
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1. USBart Kiers
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1. USBart Kiers
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1. COI have exactly the same regex on my clipboard... +1.
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2. CONice. Will try to read up on these things :) Thanks!
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