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Error handling principles for Node.js + Express.js applications?
... make their way to the error handlers you describe, and can only be caught by a process.on('uncaughtException', fn) handler. The conventional wisdom is to let that happen and rely on Forever or the like to restart the app, but if you do that, how do you return a friendly error page?
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Possible to do a MySQL foreign key to one of two possible tables?
...lways references one target table.
Polymorphic Associations are supported by frameworks such as Rails and Hibernate. But they explicitly say that you must disable SQL constraints to use this feature. Instead, the application or framework must do equivalent work to ensure that the reference is sat...
Can I click a button programmatically for a predefined intent?
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You can click a button programmatically by using the button.performClick() method.
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Volatile Vs Atomic [duplicate]
...ssertion. Individual reads and writes to variables in Java that are not 8-bytes are always atomic. The volatile keyword does not make accesses to variables that may not have otherwise been atomic into accesses that are. It merely forces the processing environment to immediately flush to main memo...
How to spread django unit tests over multiple files?
...t discovery is based on the unittest module’s built-in test
discovery. By default, this will discover tests in any file named
“test*.py” under the current working directory.
Previous behavior, from Django 1.5 documentation:
When you run your tests, the default behavior of the test ut...
What is the best algorithm for overriding GetHashCode?
...ed in comments, you may find it's better to pick a large prime to multiply by instead. Apparently 486187739 is good... and although most examples I've seen with small numbers tend to use primes, there are at least similar algorithms where non-prime numbers are often used. In the not-quite-FNV exampl...
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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How do I tidy up an HTML file's indentation in VI?
...settings will fail for this example, as html, body, and p are not indented by default. See this answer.
– Cory Klein
Jun 9 '14 at 17:07
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How do I improve ASP.NET MVC application performance?
...", new { username = "joeuser" }) to specify routes. ASP.NET MVC Perfomance by Rudi Benkovic
Cache route resolving using this helper UrlHelperCached ASP.NET MVC Perfomance by Rudi Benkovic
Security
Use Forms Authentication, Keep your frequently accessed sensitive data in the
authentication ticke...
Algorithm to return all combinations of k elements from n
...l come across is of course memory and pretty quickly, you'll have problems by 20 elements in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the prev...