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Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
...t.c root/assignment.c
Exit the VM's root FS:
cd ..
sudo umount mountpoint
Now the image is ready, we just need to run it. It will compile and run the submission after booting.
mkfifo /tmp/guest_output
Open a seperate terminal and start listening for guest output:
dd if=/tmp/guest_output bs=1
In an...
Is key-value observation (KVO) available in Swift?
...osure, then `[weak self]` is not needed
print("bar property is now \(object.bar)")
}
}
}
Note, in Swift 4, we now have strong typing of keypaths using the backslash character (the \.bar is the keypath for the bar property of the object being observed). Also, because it's us...
How to convert OutputStream to InputStream?
...a OutputStream and second one, which accepts only InputStream . Do you know how to convert OutputStream to InputStream (not vice versa, I mean really this way) that I will be able to connect these two parts?
...
Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
...Panel open IIS manager -> on Left side select "Application Pools" -> Now on middle part your project listing display then select your project e.g. "MvcApplication1" -> from right side select "set Application Pool Defaults" -> Now change .Net Framework Version from V2.0 to V4.0
This one...
How do I get the resource id of an image if I know its name?
How do I get the resource id of an image if I know its name (in Android)?
5 Answers
5
...
return query based on date
... Date().getTime()-60*5*1000 gives us 1484383878676 (5 minutes ago in ms)
Now we need to feed that into a new Date() constructor to get the ISO string format required by MongoDB timestamps.
{ $gte: new Date(resultFromAbove).toISOString() } (mongodb .find() query)
Since we can't have variables we ...
Determining 32 vs 64 bit in C++
...h what we think is a reasonable solution using macros, but was curious to know if people could think of cases where this might fail or if there is a better way to do this. Please note we are trying to do this in a cross-platform, multiple compiler environment.
...
How to get config parameters in Symfony2 Twig Templates
...onfig/config.yml
twig:
globals:
ga_tracking: "%ga_tracking%"
Now, the variable ga_tracking is available in all Twig templates:
<p>The google tracking code is: {{ ga_tracking }}</p>
The parameter is also available inside the controllers:
$this->container->getParame...
Tuples( or arrays ) as Dictionary keys in C#
...string. I tried using arrays as keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would probably not be very pretty to look at, though it is how I would do it in javascript.
...
When NOT to use Cassandra?
...gory (Including Cassandra) which are fit for different problem statements. Now lets move to the original questions, and answer them one by one.
When to use Cassandra
Being a part of the NoSQL family, Cassandra offers a solution for problems where one of your requirements is to have a very heavy wr...