Created
July 12, 2016 15:32
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SecondToLastIndexOf
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| Console.WriteLine("abedef".LastIndexOf("e","abedef".LastIndexOf("e")-1)); | |
| // --> 2 | |
| // Yes, a bit dirty, but if you use a regex then you'll have two problems. |
Unfortunately, SemVer 2 (inc. pre-release and metadata) makes it quite a bit more complex. For parsing e.g. acme.web.1.2.3-alpha.1.2+build into a package name and version, I ended up with:
(?<packageId>(\w+([_.-]\w+)*?))\.(?<semanticVersion>(\d+(\.\d+){0,3}(-[0-9A-Za-z-]*(\.[0-9A-Za-z-]*)*)?)(\+[0-9A-Za-z-]*)?)
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You want a regex? You may already have it but I've used this in our build process.
(?'major'\d+).(?'minor'\d+).(?'patch'\d+)