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Test whether string is a valid integer

... Additionally, based on character collation (see this related question/answer) something like d[g-i]{2} could end up not only matching dig but also dish in the collation suggested by that answer (where the sh digraph is considered a s...
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What SOAP client libraries exist for Python, and where is the documentation for them? [closed]

... I'm doing this to get myself acquainted with both technologies. I've installed SOAPlib and I've tried to read their Client documentation, but I don't understand it too well. Is there anything else I can look into which is more suited for being a SOAP Client library for Python? ...
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How can I determine if a variable is 'undefined' or 'null'?

...enceError and break execution if variable is not defined or referred to at all in the code, using typeof is safer. – Mani Gandham Jun 15 '14 at 9:49 59 ...
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How to give ASP.NET access to a private key in a certificate in the certificate store?

...Local Computer" account. Best to use Certificates MMC. Make sure to check "Allow private key to be exported" Based upon which, IIS 7.5 Application Pool's identity use one of the following. IIS 7.5 Website is running under ApplicationPoolIdentity. Open MMC => Add Certificates (Local computer) sn...
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How to check if hex color is “too black”?

... You have to extract the three RGB components individually, and then use a standard formula to convert the resulting RGB values into their perceived brightness. Assuming a six character colour: var c = c.substring(1); // strip # var rgb = parseInt(c, 16); // convert rrg...
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MVC Razor dynamic model, 'object' does not contain definition for 'PropertyName'

...: According to David Ebbo, you can't pass an anonymous type into a dynamically-typed view because the anonymous types are compiled as internal. Since the CSHTML view is compiled into a separate assembly, it can't access the anonymous type's properties. EDIT #2: David Ebbo has edited his post with...
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Changing Vim indentation behavior by file type

...h a width of 2 characters for indenting (the noexpandtab option is set globally elsewhere in my configuration). This is described here: http://vimdoc.sourceforge.net/htmldoc/usr_05.html#05.4, scroll down to the section on filetype plugins. ...
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LINQ query on a DataTable

...s.Cast<DataRow>().Where(myRow => (int)myRow["RowNo"] == 1). Personally, I don't find the call to AsEnumerable() any more complicated than the call to Cast<DataRow>(). As far as I know, the performance is the same, so it's just a matter of preference. – Collin K ...
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How to randomize (or permute) a dataframe rowwise and columnwise?

...] 1 0 0 1 0 [4,] 0 0 1 0 1 To explain the call: out <- permatswap(mat, times = 99, burnin = 20000, thin = 500, mtype = "prab") times is the number of randomised matrices you want, here 99 burnin is the number of swaps made before we start taking random samples....
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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr

...ing so i had to run open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg That didnt work for me at first because the version of CommandLineTools i had installed did not have the "Packages" folder. So i uninstalled and reinstalled like this: rm -rf /Library/Devel...