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PostgreSQL function for last inserted ID
...sertion into persons table, makes some extra insertions in other tables... then LASTVAL will probably give us the wrong value. The problem can even happen with CURRVAL, if the extra insertions are done intto the same persons table (this is much less usual, but the risk still exists).
Option 3: I...
Run certain code every n seconds [duplicate]
... n seconds?
For example, the program would go through whatever code I had, then once it had been 5 seconds (with time.sleep() ) it would execute that code. I would be using this to update a file though, not print Hello World.
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Run two async tasks in parallel and collect results in .NET 4.5
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You should use Task.Delay instead of Sleep for async programming and then use Task.WhenAll to combine the task results. The tasks would run in parallel.
public class Program
{
static void Main(string[] args)
{
Go();
}
public static void Go()
...
npm command to uninstall or prune unused packages in Node.js
...his command removes "extraneous" packages. If a package name is provided, then only packages matching one of the supplied names are removed.
Extraneous packages are packages that are not listed on the parent package's dependencies list.
If the --production flag is specified, this command will remov...
How to serve an image using nodejs
...he job done. If someone doesn't want to rely on anyone to get the job done then at least raw TCP sockets should be used instead - which I do in one of my examples below.
A more serious problem is that all of the answers here that use the http module are broken. They introduce race conditions, insec...
Swift compiler error: “non-modular header inside framework module”
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Is your header public?
Select the header file in the project explorer. Then in the section on the right in xcode, you'll notice there is a dropdown next to the target. Change that from "project" to "public". This worked for me.
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How to delete files older than X hours
...nes that can't use -mmin? (If you're on Linux, -mmin is available, if not then date and other commands are also feeble in comparison.)
– iconoclast
May 10 '11 at 17:20
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C# DLL config file
... loading in the data to identify where the config file will be stored, and then calling ConfigurationManager.OpenMappedExeConfiguration to open it up into a new Configuration instance. This will cut you off from the version protection offered by the automatic path generation mechanism.
Statistical...
How can I access my localhost from my Android device?
...top and phone are connected to the same WiFi (or any other local network), then use your desktop IP address assigned by the router (not localhost and not 127.0.0.1).
To find out the IP address of your desktop:
type into the command line ipconfig (Windows) or ifconfig (Unix)
on Linux the one-...
Error: Can't set headers after they are sent to the client
..., you called res.redirect(), which caused the response to become Finished. Then your code threw an error (res.req is null). and since the error happened within your actual function(req, res, next) (not within a callback), Connect was able to catch it and then tried to send a 500 error page. But sinc...