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log4net hierarchy and logging levels
...
Number of levels recorded for each setting level:
ALL DEBUG INFO WARN ERROR FATAL OFF
•All
•DEBUG •DEBUG
•INFO •INFO •INFO
•WARN •WARN •WARN •WARN
•ERROR •ERROR •ERROR ...
“The certificate chain was issued by an authority that is not trusted” when connecting DB in VM Role
...g Let's Encrypt to get a CA signed certificate from a known trusted CA for free, and install it on the VM. Don't forget to set it up to automatically refresh. You can read more on this topic in SQL Server books online under the topic of "Encryption Hierarchy", and "Using Encryption Without Validati...
How can I sort a List alphabetically?
...untryNames, Collator.getInstance());
Solution with a TreeSet
If you are free to decide, and if your application might get more complex, then you might change your code to use a TreeSet instead. This kind of collection sorts your entries just when they are inserted. No need to call sort().
Collec...
How to test my servlet using JUnit
...
First off, in a real application, you would never get database connection info in a servlet; you would configure it in your app server.
There are ways, however, of testing Servlets without having a container running. One is to use mock objects. Spring provides a set of very useful mocks for things...
How to add extra info to copied web text
...Older post - before the 2020 update]
There are two main ways to add extra info to copied web text.
1. Manipulating the selection
The idea is to watch for the copy event, then append a hidden container with our extra info to the dom, and extend the selection to it.
This method is adapted from this...
How to detect when WIFI Connection has been established in Android?
...lse {
// wifi connection was lost
}
}
}
For more info, see the documentation for BroadcastReceiver and WifiManager
Of course you should check whether the device is already connected to WiFi before this.
EDIT:
Thanks to ban-geoengineering, here's a method to check whether ...
MySQL select one column DISTINCT, with corresponding other columns
... @Full Decent you can't, according to MySQL documentation: "The server is free to choose any value from each group, so unless they are the same, the values chosen are indeterminate.". In practice I've successfully used this kind of queries with ORDER BY clause, for instance you could add ORDER BY ...
How to export JavaScript array info to csv (on client side)?
...do this using JavaScript. I am using Dojo 1.8 and have all the attribute info in array, which looks like this:
28 Answers...
Is it safe to delete a NULL pointer?
...However, despite these abrogations of your draconian ownership rules, lock free structures are provably more robust than lock based ones. And yes, my co-workers do indeed love me for the enhanced execution profile these structures provide and the rigorous thread safety they maintain, which allow eas...
GPL and LGPL open source licensing restrictions [closed]
...re must be released with a compatible license.
The GPL/LGPL licenses mean "free" as in "free speech", not "free beer". You can create a derivative work and sell it for large amounts of money, but you must comply with the GPL/LGPL.
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