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Counting null and non-null values in a single query
...ount(*) FROM us WHERE a IS NOT NULL
Edited to have the full query, after reading the comments :]
SELECT COUNT(*), 'null_tally' AS narrative
FROM us
WHERE a IS NULL
UNION
SELECT COUNT(*), 'not_null_tally' AS narrative
FROM us
WHERE a IS NOT NULL;
...
Where to put Gradle configuration (i.e. credentials) that should not be committed?
...
You could put the credentials in a properties file and read it using something like this:
Properties props = new Properties()
props.load(new FileInputStream("yourPath/credentials.properties"))
project.setProperty('props', props)
Another approach is to define environment vari...
Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
...The CIL for both is the same. Most people find while(true) to be easier to read and understand. for(;;) is rather cryptic.
Source:
I messed a little more with .NET Reflector, and I compiled both loops with the "Optimize Code" on in Visual Studio.
Both loops compile into (with .NET Reflector):
Label_...
If REST applications are supposed to be stateless, how do you manage sessions?
I'm in need of some clarification. I've been reading about REST, and building RESTful applications. According to wikipedia, REST itself is defined to be Representational State Transfer . I therefore don't understand all this stateless gobbledeygook that everyone keeps spewing.
...
Chrome Dev Tools: How to trace network for a link that opens a new tab?
...ck to origin page and hit that link again.
The result will be loaded in already prepared window with developer tools opened.
You can activate "preserve log" option in dev tools (see in Konrad Dzwinel excellent answer) to catch any redirect traffic on that link.
Note : most people familiar with li...
Do you (really) write exception safe code? [closed]
...necessary when you need to work with STL or Boost code. For example, C++ threads (boost::thread or std::thread) will throw an exception to exit gracefully.
Are you sure your last "production ready" code is exception safe?
Can you even be sure, that it is?
Writing exception-safe code is like writin...
Receive JSON POST with PHP
...
If you already have your parameters set like $_POST['eg'] for example and you don't wish to change it, simply do it like this:
$_POST = json_decode(file_get_contents('php://input'), true);
This will save you the hassle of changing ...
What are allowed characters in cookies?
...
@bobince - I know this is old, but am I reading your answer correctly to mean that spaces are not technically allowed in cookie values? "excluding semi-colon, comma and white space" [emphasis mine]
– Adam Rackis
Feb 8 '13 at 3...
Is it worth hashing passwords on the client side
...dit All of this is error prone and tedious and somewhat hard to get right (read: secure). If ever possible, consider using authentication protocol implementations already written by knowledgeable people (unlike me! The above is only from memory of a book I read some time ago.) You really don't want ...
Reverting to a specific commit based on commit id with Git? [duplicate]
...
but git checkout is read only, therefore you can't commit an old revision.
– robben
May 15 '17 at 14:54
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