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Remove an entire column from a data.frame in R
...u could do
Data <- subset( Data, select = -c(d, b ) )
You can remove all columns between d and b with:
Data <- subset( Data, select = -c( d : b )
As I said above, this syntax works only when the column names are known. It won't work when say the column names are determined programmatical...
Valid content-type for XML, HTML and XHTML documents
...st for registered media types ending in +xml.
(For unregistered x- types, all bets are off, but you'd hope +xml would be respected.)
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Update R using RStudio
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You install a new version of R from the official website.
RStudio should automatically start with the new version when you relaunch it.
In case you need to do it manually, in RStudio, go to :Tools -> options -> General.
Chec...
Is there a “previous sibling” selector?
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I found a way to style all previous siblings (opposite of ~) that may work depending on what you need.
Let's say you have a list of links and when hovering on one, all the previous ones should turn red. You can do it like this:
/* default lin...
Change the default editor for files opened in the terminal? (e.g. set it to TextEdit/Coda/Textmate)
...e git works the way I would expect it to. This git config --global --unset-all core.editor then git config --global --add core.editor "open -W -n".
– Diogenes
Jul 4 '11 at 20:27
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ActionLink htmlAttributes
...can get around that:
Use an underscore instead of dash (MVC will automatically replace the underscore with a dash in the emitted HTML):
@Html.ActionLink("Edit", "edit", "markets",
new { id = 1 },
new {@class="ui-btn-right", data_icon="gear"})
Use the overload that takes in a dictiona...
How to keep a git branch in sync with master
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You will have quite a few "merge commits", essentially git trying to resolve differences between your branches. if you're worried about that AND you're the only one using the branch then do a "git rebase master" instead of a "git merge master" AND DO NOT PUSH THE COMMITS TO ...
Could not load file or assembly System.Web.Http.WebHost after published to Azure web site
...on that helped me was to run Update-Package Microsoft.AspNet.WebApi -reinstall from the NugGet package manager, as suggested by Pathoschild.
I then had to delete my .suo file and restart VS, as suggested by Sergey Osypchuk in this thread.
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Given the lat/long coordinates, how can we find out the city/country?
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Google's reverse geocoding is only allowed in conjunction with a Google Map. If you want a solution that has no such restrictions (though it is commercial and only has US cities), check out: askgeo.com
– James D
May 8 '12...
Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
...> < -->
&e link </a>
</body>
Not to mention all the browser-specific parsing for invalid constructs.
Good luck pitting regex against that!
EDIT (Jörg W Mittag): Here is another nice piece of well-formed, valid HTML 4.01:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4...