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Error handling principles for Node.js + Express.js applications?
It seems like error reporting/handling is done differently in Node.js+ Express.js applications compared to other frameworks. Am I correct in understanding that it works as follows?
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MySQL - Make an existing Field Unique
...ready existing table with a field that should be unique but is not. I only know this because an entry was made into the table that had the same value as another, already existing, entry and this caused problems.
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Using scp to copy a file to Amazon EC2 instance?
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Try specifying the user to be ec2-user, e.g.
scp -i myAmazonKey.pem phpMyAdmin-3.4.5-all-languages.tar.gz ec2-user@mec2-50-17-16-67.compute-1.amazonaws.com:~/.
See Connecting to Linux/UNIX Instances Using SSH.
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How to get current formatted date dd/mm/yyyy in Javascript and append it to an input [duplicate]
I would like to add a current date to a hidden HTML tag so that it can be sent to the server:
7 Answers
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iPhone App Minus App Store?
...ut it involves adding UUIDs for each of the devices to your application package. UUIDs can be easiest retrieved using Ad Hoc Helper available from the App Store. For further details on this method, see Craig Hockenberry's Beta testing on iPhone 2.0 article
Jailbroken iPhone
For jailbroken iPhones,...
ASP.NET: This method cannot be called during the application's pre-start initialization stage
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Add this in your web.config (in the appSettings section):
<add key="enableSimpleMembership" value="false"/>
<add key="autoFormsAuthentication" value="false"/>
EDIT:
For the ones who ask why, it is a known issue described in the mvc 3 release notes
More details here
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Cleaner way to do a null check in C#? [duplicate]
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In a generic way, you may use an expression tree and check with an extension method:
if (!person.IsNull(p => p.contact.address.city))
{
//Nothing is null
}
Full code:
public class IsNullVisitor : ExpressionVisitor
{
public bool IsNull { get; private set; }
public...
Is there any way to check if iOS app is in background?
I want to check if the app is running in the background.
8 Answers
8
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Postgresql - unable to drop database because of some auto connections to DB
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You can prevent future connections:
REVOKE CONNECT ON DATABASE thedb FROM public;
(and possibly other users/roles; see \l+ in psql)
You can then terminate all connections to this db except your own:
SELECT pid, pg_terminate_backend(pid)
FROM pg_stat_activity
WHE...
Instance attribute attribute_name defined outside __init__
I split up my class constructor by letting it call multiple functions, like this:
6 Answers
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