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Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
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You can use Qemu to test assignments quickly. This procedure below takes less than 5 seconds on my 5 year old laptop.
Let's assume the student has to develop a program that takes unsigned ints, each on their own line, until a line with "-1" arr...
How do I use reflection to call a generic method?
...jects.Length; i++)
{
ProcessItem((dynamic)objects[i], "test" + i, i);
//ProcesItm((dynamic)objects[i], "test" + i, i);
//compiler error: The name 'ProcesItm' does not
//exist in the current context
//ProcessItem((dynamic)objects[i...
Why are global variables evil? [closed]
... globals is a horrible idea, one reason might be the inability to properly test functions that update some arbitrary dictionary that exists "somewhere". A codebase with globals cannot be actually proved functional.
– Tomasz Sosiński
Nov 23 '17 at 13:20
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Batch files - number of command line arguments
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Have tested this out to 2500 arguments as a function and used it to define arrays of same size. Dont ask me why exactly. Mostly just learning what batch is capable of.
– T3RR0R
Jan 4 at 12:56...
unix diff side-to-side results?
...y, --side-by-side
output in two columns
Hence, say:
diff -y /tmp/test1 /tmp/test2
Test
$ cat a $ cat b
hello hello
my name my name
is me is you
Let's compare them:
$ diff -y a b
hello ...
How to write a Python module/package?
...ute the live repository with our experiments, we create an account for the testing repository, and install twine for the upload process:
pip install twine
Now we're almost there, with our account created we simply tell twine to upload our package, it will ask for our credentials and upload our pa...
jQuery: Test if checkbox is NOT checked
...heckSurfaceEnvironment').not(':checked') returns an array of DOM elements. Testing this with 'if' returns 'true' even if there was no match to the selector and the array is empty. The only way your answer could be correct is if you tested i$('#checkSurfaceEnvironment').not(':checked').length, which ...
Java NIO FileChannel versus FileOutputstream performance / usefulness
...s comparing these two methods. Here is the code I used, the file that I am testing with is around 350MB . Is it a good option to use NIO based classes for File I/O, if I am not looking at random access or other such advanced features?
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$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
... POST data.
I check the request method — I actually never thought about testing the $_POST array. I check the required post fields, though. So an empty post request would give the user a lot of error messages - which makes sense to me.
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Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
...t doesn't refer any external requirements by URL) with the following hack (tested with pip 9.0.1):
install_reqs = parse_requirements('requirements.txt', session='hack')
This doesn't filter environment markers though.
In old versions of pip, more specifically older than 6.0, there is a public A...