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Return empty cell from formula in Excel
...mpty cell from an Excel formula, but it appears that Excel treats an empty string or a reference to an empty cell differently than a true empty cell. So essentially I need something like
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How to make HTML table cell editable?
...attribute must take one of the following values:
true or the empty string, which indicates that the element must be editable;
false, which indicates that the element must not be editable.
If this attribute is not set, its default value is inherited from its
parent element.
T...
Getting current directory in .NET web application
...ry of the request being processed.
Note: in C#, @ is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.
Footnotes
Server.MapPath(null) and Server.MapPath("") will produce this effect too.
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What is the maximum characters for the NVARCHAR(MAX)?
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From MSDN Documentation
nvarchar [ ( n | max ) ]
Variable-length Unicode string data. n defines the string length and can be a value from 1 through 4,000. max indicates that the maximum storage size is 2^31-1 bytes (2 GB).
The storage size, in bytes, is two times the actual length of data entered ...
HttpServletRequest - how to obtain the referring URL?
...lable in the HTTP referer header. You can get it in a servlet as follows:
String referrer = request.getHeader("referer"); // Yes, with the legendary misspelling.
You, however, need to realize that this is a client-controlled value and can thus be spoofed to something entirely different or even re...
Map and Reduce in .NET
...d Reduce so I created a few extension methods you can use:
IEnumerable<string> myStrings = new List<string>() { "1", "2", "3", "4", "5" };
IEnumerable<int> convertedToInts = myStrings.Map(s => int.Parse(s));
IEnumerable<int> filteredInts = convertedToInts.Filter(i => i...
Is it possible to perform a 'grep search' in all the branches of a Git project?
... to see more recent (relevant) changes first.
git log -p --all -S 'search string'
git log -p --all -G 'match regular expression'
These log commands list commits that add or remove the given search string/regex, (generally) more recent first. The -p option causes the relevant diff to be shown wher...
Save classifier to disk in scikit-learn
...ed scikit-learn estimators, but can only
pickle to the disk and not to a string:
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How to check if field is null or empty in MySQL?
...ld1
from tablename
If you only want to check for null and not for empty strings then you can also use ifnull() or coalesce(field1, 'empty'). But that is not suitable for empty strings.
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Redirect from asp.net web api post action
...ing the url:
var response = Request.CreateResponse(HttpStatusCode.Moved);
string fullyQualifiedUrl = Request.RequestUri.GetLeftPart(UriPartial.Authority);
response.Headers.Location = new Uri(fullyQualifiedUrl);
Note:
Will only work if both your MVC website and WebApi are on the same URL
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