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Is it possible to “await yield return DoSomethingAsync()”
...erators as implemented with yield are a blocking construct, so as of right now await and yield are incompatible.
Long Because iterating over an IEnumerable is a blocking operation, calling a method marked as async will still execute it in a blocking manner, since it has to wait for that operation t...
How can I suppress all output from a command using Bash?
... different so that all output is redirected regardless of your example? I know screen and script can do something like that but both are finicky and vary from *nix to *nix.
– Brent
Nov 25 '14 at 20:50
...
How to forward declare a C++ template class?
...);
}
And we can use it with std::vector, eg.:
#include <vector>
// Now the compiler understands how to handle
// std::vector with one argument
// (making use of its default argument)
int main()
{
Foo(std::vector<int>(3));
}
I haven't checked the standards, but this works on clang...
Make sure that the controller has a parameterless public constructor error
...t, until I modified my DbContext to have an additional constructor. I am now having issues with the resolution and not sure what to do to fix this. Is there an easy way to force it to grab the parameterless constructor or I am approaching this incorrectly?
...
How do you create a read-only user in PostgreSQL?
...ble to create tables anyway
GRANT CREATE ON SCHEMA public to writeuser;
# Now create the read-only user
CREATE ROLE readonlyuser WITH LOGIN ENCRYPTED PASSWORD 'strongpassword';
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readonlyuser;
If your read-only user doesn't have permission to list tabl...
detect key press in python?
I am making a stopwatch type program in python and I would like to know how to detect if a key is pressed (such as p for pause and s for stop), and I would not like it to be something like raw_input that waits for the user's input before continuing execution. Anyone know how to do this in a while lo...
Determine if variable is defined in Python [duplicate]
How do you know whether a variable has been set at a particular place in the code at runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or...
What exactly happens when I set LoadUserProfile of IIS pool?
...
I tried to enable LoadUserProfile for the application pool and it works now.
This is most likely because the Windows Cryptographic Service Provider was trying to store or load a key for your certificate in the user store, and since a profile was not available, a cryptographic context was not av...
How do you detect where two line segments intersect? [closed]
...bering that s × r = − r × s):
u = (q − p) × r / (r × s)
Now there are four cases:
If r × s = 0 and (q − p) × r = 0, then the two lines are collinear.
In this case, express the endpoints of the second segment (q and q + s) in terms of the equation of the first li...
Maven: how to do parallel builds?
...
Maven 3 (as of beta 1) now supports parallel builds as an experimental feature.
For example,
mvn -T 4 clean install # Builds with 4 threads
mvn -T 1C clean install # 1 thread per cpu core
mvn -T 1.5C clean install # 1.5 thread per cpu core
Full do...