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Checking from shell script if a directory contains files
...xCraft's article posted in 2007. Add 2>/dev/null to suppress the output error "No such file or directory".
See also Andrew Taylor's answer (2008) and gr8can8dian's answer (2011).
if [ -n "$(ls -A your/dir 2>/dev/null)" ]
then
echo "contains files (or is a file)"
else
echo "empty (or does ...
How to Flatten a Multidimensional Array?
...rge', []) (notice the empty array) returns null and triggers a php warning error. It's a slick solution if you know for a fact your array won't be empty, but that's not a common assumption many can make.
– goat
Jan 15 '15 at 6:42
...
Returning value from called function in a shell script
...nuelJordan, Functions can only return exit codes and >&2 logs to stderror, so, the last echo is written to stdout, so, the calling function ONLY captures stdout and not stderr. Assuming execution is single threaded, a better option is to maintain a custom variable specific like TEST_LOCK_STAT...
UnicodeEncodeError: 'charmap' codec can't encode - character maps to , print function [du
...s
print sys.stdout.encoding
print u"Stöcker".encode(sys.stdout.encoding, errors='replace')
print u"Стоескер".encode(sys.stdout.encoding, errors='replace')
This example properly replaces any non-printable character in my name with a question mark.
If you create a custom print function, e...
How to get just one file from another branch
...t can be a good question to ask here, with specific details like the exact error message, and version of Git and OS used.
– VonC
Jun 5 '14 at 21:23
2
...
How do I install Python OpenCV through Conda?
...OpenCV, but am running into an issue where when I type import cv I get the error DLL load failed: The specified module could not be found. I was wondering if you ran into this issue during your install.
– cogle
Dec 26 '14 at 6:18
...
Sending and Parsing JSON Objects in Android [closed]
...t first but though functional in debug version, ProGuard generated tons of errors and release version causes crashes which are hard to trackdown. I am sure this is no Jackson related issue, but it made me switch to GSON which worked fine and only required additional 14kB for just streaming.
...
Official way to ask jQuery wait for all images to load before executing something
...
* the specified callback function, only when all of them are loaded (or errored).
* @author: H. Yankov (hristo.yankov at gmail dot com)
* @version: 1.0.0 (Feb/22/2010)
* http://yankov.us
*/
(function($) {
$.fn.batchImageLoad = function(options) {
var images = $(this);
var origina...
Static/Dynamic vs Strong/Weak
...rly typed operation might cause the program to halt or otherwise signal an error at run time. A primary reason for static typing is to rule out programs that might have such "dynamic type errors".
Strong typing generally means that there are no loopholes in the type system, whereas weak typing m...
No resource found - Theme.AppCompat.Light.DarkActionBar
...
For anyone out there using VS2015, I was getting this error too, and it turns out I hadn't added the library to the project...
Install-Package Xamarin.Android.Support.v7.AppCompat
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