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How can I strip first X characters from string using sed?
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This doesn't seem to work, and if it does, can you explain how
– Alexander Mills
Jul 3 '19 at 3:29
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What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
What is the difference between Class.forName() and Class.forName().newInstance() ?
9 Answers
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How to redirect from OnActionExecuting in Base Controller?
...oid OnActionExecuting(ActionExecutingContext filterContext)
{
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if (needToRedirect)
{
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filterContext.Result = new RedirectResult(url);
return;
}
...
}
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Git status - is there a way to show changes only in a specific directory?
I would like to see a list of files modified since the last commit, as git status shows, but I care only about files located in a single directory. Is there a way to do this? I tried git status <directory> , but it seems this does something completely different (lists all changed files, as ...
What is the use of the square brackets [] in sql statements?
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The brackets are required if you use keywords or special chars in the column names or identifiers. You could name a column [First Name] (with a space)--but then you'd need to use brackets every time you referred to that column.
The newer tools add th...
Strangest language feature
...ts & semicolons syntax, it's not apparent at all that newlines are significant.
– Tamas Czinege
Jan 10 '10 at 15:27
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Subset of rows containing NA (missing) values in a chosen column of a data frame
...umn ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
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How to get number of rows using SqlDataReader in C#
...h the specialized count is that there's the potential for the count being different from the number of returned rows because somebody else has changed the data in a way that leads to the number of rows being returned.
– Pete OHanlon
Sep 5 '09 at 13:30
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ASP.NET MVC Conditional validation
...onResult> Validate(ValidationContext validationContext)
{
if (IsSenior && string.IsNullOrEmpty(Senior.Description))
yield return new ValidationResult("Description must be supplied.");
}
}
Read more at Introducing ASP.NET MVC 3 (Preview 1).
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Find and extract a number from a string
...tring b = string.Empty;
int val;
for (int i=0; i< a.Length; i++)
{
if (Char.IsDigit(a[i]))
b += a[i];
}
if (b.Length>0)
val = int.Parse(b);
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