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How to check whether mod_rewrite is enable on server?
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from the command line, type
sudo a2enmod rewrite
if the rewrite mode is already enabled, it will tell you so!
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Get selected value of a dropdown's item using jQuery
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i wish you had linked references to .val() and .text()
– shareef
Jul 9 '13 at 13:35
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Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;
...ld Path -> Configure Build Path
In Java Build Path, go to the tab Order and Export
Uncheck your .jar library
Only sometimes:
In Order and Export tab I did not have any jar library there, so I have unchecked Android Private Libraries item. Now my project is running.
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How to get MVC action to return 404
...being returned (maybe because it has been deleted), I want to return a 404 and display an error page.
12 Answers
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How to stop Visual Studio from “always” checking out solution files?
...of these. I removed it, checked in the solution, closed then re-opened it, and no more automatic check out.
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How do I disable the resizable property of a textarea?
...ssible values for resizing restrictions: none, both, horizontal, vertical, and inherit:
textarea {
resize: vertical; /* user can resize vertically, but width is fixed */
}
Review a decent compatibility page to see what browsers currently support this feature. As Jon Hulka has commented, the dim...
Change EOL on multiple files in one go
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The Replace dialog can handle extended characters like EOL. Just change "Search Mode" to "Extended", and you can work with EOL (\r\n in Windows or \n in Unix), tabs (\t), etc.
You can also use the Find in Files tab of the dialog to do the replac...
Best way to check for nullable bool in a condition expression (if …)
I was wondering what was the most clean and understandable syntax for doing condition checks on nullable bools.
12 Answers...
Selecting only numeric columns from a data frame
...list-apply functions:
nums <- unlist(lapply(x, is.numeric))
Then standard subsetting
x[ , nums]
## don't use sapply, even though it's less code
## nums <- sapply(x, is.numeric)
For a more idiomatic modern R I'd now recommend
x[ , purrr::map_lgl(x, is.numeric)]
Less codey, less ref...
Xcode find caller functions
...ionality. when you highlight say... a function, you can check the "caller" and "callee"
edit i believe it's located at the top left of the file panel for that file... so double click on the function to highlight it, and you click on on the file panel options (the one that has the "open recent, open...