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Check for installed packages before running install.packages() [duplicate]
...al users on different computers. One of its lines contains the install.packages("xtable") command.
16 Answers
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Powershell equivalent of bash ampersand (&) for forking/running background processes
In bash the ampersand (&) can be used to run a command in the background and return interactive control to the user before the command has finished running. Is there an equivalent method of doing this in Powershell?
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How do I fire an event when a iframe has finished loading in jQuery?
...tty certain that it cannot be done.
Pretty much anything else than PDF works, even Flash. (Tested on Safari, Firefox 3, IE 7)
Too bad.
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Container View Controller Examples [closed]
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Max MacLeod
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answered Oct 13 '11 at 18:42
hypercrypthyperc...
Why doesn't delete set the pointer to NULL?
...pointer to NULL after delete is not part of the standard. If this gets taken care of then many of the crashes due to an invalid pointer would not occur. But having said that I can think of couple of reasons why the standard would have restricted this:
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Grabbing the href attribute of an A element
Trying to find the links on a page.
10 Answers
10
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Referring to a Column Alias in a WHERE Clause
...120)
Normally you can't refer to field aliases in the WHERE clause. (Think of it as the entire SELECT including aliases, is applied after the WHERE clause.)
But, as mentioned in other answers, you can force SQL to treat SELECT to be handled before the WHERE clause. This is usually done with paren...
In Android EditText, how to force writing uppercase?
...nformation. But I need to force user to write in uppercase letters.
Do you know a function to do that?
23 Answers
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Sublime - delete all lines containing specific value
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You can do a regular expression search-and-replace:
Click Find > Replace.
Ensure that the Regular Expression button is pressed.
For the Find What field, put:
^.*No records to send and/or not connected.*\n
Leave the Replace With field empty.
Click Replace All
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Does Flask support regular expressions in its URL routing?
I understand that Flask has the int, float and path converters, but the application we're developing has more complex patterns in its URLs.
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