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Extract every nth element of a vector
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To select every nth element from any starting position in the vector
nth_element <- function(vector, starting_position, n) {
vector[seq(starting_position, length(vector), n)]
}
# E.g.
vec <- 1:12
nth_element(vec, ...
CSS rule to apply only if element has BOTH classes [duplicate]
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So, this will not select <div class="abc"> because it lacks xyz?
– Majid Fouladpour
Apr 26 '11 at 21:30
5
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Emacs Ruby autocomplete almost working
...e. This works well in most files except I've found it doesn't allow me to select an answer from the table when I'm editing some code in my ruby on rails project.
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How do I make a textarea an ACE editor?
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I have a trouble with this method: texting 'SELECT 1 OR 2;' on ace.editor will put 'SELECT&nbsp;1OR&nbps;2;' to textarea. Can someone tell me what i'm doing wrong?
– alexglue
Apr 1 '14 at 7:08
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How do I undo “Scope to this” in Visual Studio 2012?
...orward and back buttons.
Extra:
You can also right click on projects and select 'New Solution Explorer Window' to have two separate solution explorers which can browse independently (note that changing the settings on one will effect the other).
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Android Studio could not find any version that matches com.android.support:appcompat-v7:+
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From Android Studio go to:
Tools >> Android >> SDK Manager
Select and install "Extras|Android Support Repository"
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Changing the case of a string in Eclipse
How do I make a lowercase string uppercase using Eclipse? I want to select a string and either uppercase it or lowercase it. Is there a shortcut for doing this?
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Best practice to make a multi language application in C#/WinForms? [closed]
...s.resx and my German resources LanguageResources.de.resx, it automatically selected the correct language. The ResXFileCodeGenerator took care of it all for me.
Note that the fields in the two files were the same and any not yet entered German fields would show up in the application as English as th...
mysql: see all open connections to a given database?
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That should do the trick for the newest MySQL versions:
SELECT * FROM INFORMATION_SCHEMA.PROCESSLIST WHERE DB = "elstream_development";
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How to “set a breakpoint in malloc_error_break to debug”
...Navigator or ⌘8), clicking the plus button in the lower left corner, and selecting "Add Symbolic Breakpoint". In the popup that comes up, enter malloc_error_break in the Symbol field, then click Done.
EDIT: openfrog added a screenshot and indicated that he's already tried these steps without succe...