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Split column at delimiter in data frame [duplicate]
... rename it appropriately (the rename function from the reshape package is handy for doing this on the fly) and then rbind it with the existing data frame -- extra effort to get it inserted in place of the previous single column rather than as the first or last columns ...
– Ben...
How to assign string to bytes array
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Safe and simple:
[]byte("Here is a string....")
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Start ssh-agent on login
... is especially nice since it will see if you've already started ssh-agent and, if it can't find it, will start it up and store the settings so that they'll be usable the next time you start up a shell.
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Getting the array length of a 2D array in Java
I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code:
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In C#, how do I calculate someone's age based on a DateTime type birthday?
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An easy to understand and simple solution.
// Save today's date.
var today = DateTime.Today;
// Calculate the age.
var age = today.Year - birthdate.Year;
// Go back to the year in which the person was born in case of a leap year
if (birthdat...
RedirectToAction between areas?
...ou want to redirect from one area to another area, above code works well.
And, if you want to redirect from one area to a controller/view which is not there in the area folder (i.e. in most cases, your front end), you can specify area = "".
i.e.
return RedirectToAction("action", "controller", new...
Access to private inherited fields via reflection in Java
I found a way to get inherited members via class.getDeclaredFields();
and acces to private members via class.getFields()
But i'm looking for private inherited fields.
How can i achieve this?
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How can I change the current URL?
...tely, this is only supported in very modern browsers, like Chrome, Safari, and the Firefox 4 beta.
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Name node is in safe mode. Not able to leave
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In order to forcefully let the namenode leave safemode, following command should be executed:
bin/hadoop dfsadmin -safemode leave
You are getting Unknown command error for your command as -safemode isn't a sub-command for hadoop fs, but it is of hadoop dfsadmin.
Also after the above comman...
How to select first parent DIV using jQuery?
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parents("div") is traversing and returns all the parent div's you should use .eq(0) after it to make sure it returns just the one you want
– meo
Aug 17 '11 at 7:44
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