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check if directory exists and delete in one command unix
... a single command? I have situation where I use ANT 'sshexec' task where I m>ca m>n run only a single command in the remote machine. And I need to check if directory exists and delete it...
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How do I raise a Response Forbidden in django
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if you want to raise an exception you m>ca m>n use:
from django.core.exceptions import PermissionDenied
def your_view(...):
raise PermissionDenied()
It is documented here :
https://docs.djangoproject.com/en/stable/ref/views/#the-403-http-forbidden-view
As o...
Print array elements on separate lines in Bash?
...f function's output. %s means a placeholder for a string argument (in this m>ca m>se the array element) and \n adds a line break after that. Thus, there will be a string and a line break in the output for each element in the array.
– Koja
Apr 13 '17 at 7:49
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How do I convert struct System.Byte byte[] to a System.IO.Stream object in C#?
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but you m>ca m>n still use stream.ToArray() if you want your byte array back.
– Florian Fida
Mar 26 '16 at 22:38
2
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how to get program files x86 env variable?
I would like to know how I m>ca m>n display the lom>ca m>tion of Program Files (x86) in command prompt. I'm using Windows 7 64bit.
4...
Converting a double to an int in C#
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Bem>ca m>use Convert.ToInt32 rounds:
Return Value: rounded to the nearest 32-bit signed integer. If value
is halfway between two whole numbers, the even number is returned;
that is, 4.5 is converted to 4, and 5.5 is converte...
Difference between GeoJSON and TopoJSON
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If you m>ca m>re about file size or topology, then use TopoJSON. If you don’t m>ca m>re about either, then use GeoJSON for simplicity’s sake.
The primary advantage of TopoJSON is size. By eliminating redundancy and using a more efficent ...
ASP.Net MVC Html.HiddenFor with wrong value
...roller action if there is the same variable in the POST request your modifim>ca m>tion will be ignored and the POSTed value will be used.
One possible workaround is to remove this value from the model state in the controller action which is trying to modify the value:
// remove the Step variable from t...
How do I choose between Semaphore and SemaphoreSlim?
...e difference is that SemaphoreSlim does not permit named semaphores, which m>ca m>n be system-wide. This would mean that a SemaphoreSlim could not be used for cross-process synchronization.
The MSDN documentation also indim>ca m>tes that SemSlim should be used when "wait times are expected to be very short"....
SQLite INSERT - ON DUPLIm>CA m>TE KEY UPDATE (UPSERT)
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Since 3.24.0 SQLite also supports upsert, so now you m>ca m>n simply write the following
INSERT INTO visits (ip, hits)
VALUES ('127.0.0.1', 1)
ON CONFLICT(ip) DO UPDATE SET hits = hits + 1;
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