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How does a debugger work?
...ming from the windowing system, the OS will generate events based on what happens in the process being debugged – for example an exception occurring. See WaitForDebugEvent.
The debugger is able to read and write the target process' virtual memory, and even adjust its register values through APIs ...
Difference between System.DateTime.Now and System.DateTime.Today
...aces in this world (such as Brazil) where the "spring-forward" transition happens exactly at Midnight. The clocks go from 23:59 to 01:00. This means that the value you get for DateTime.Today on that date, does not exist! Even if you use DateTimeOffset.Now.Date, you are getting the same result, an...
How does facebook, gmail send the real time notification?
...n a given interval (perhaps every few seconds), to check if something has happened. However, this can be pretty network intensive, and you often make pointless requests, because nothing has happened.
The way Facebook does it is using the comet approach, rather than polling on an interval, as soon a...
I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it
I just discovered that every request in an ASP.Net web application gets a Session lock at the beginning of a request, and then releases it at the end of the request!
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Why not use java.util.logging?
...ss in 6 as well, but I'm not too sure).
JUL isn't well suited for multiple applications with different configurations in the same JVM (think multiple web applications that should not interact). Tomcat needs to jump through some hoops to get that working (effectively re-implementing JUL if I understo...
Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
...w is to list all dependencies in setup.py and remove requirements.txt. For applications requiring both, simply reduce the dependency list in requirements.txt to merely the . character. Done.
– Cecil Curry
Jun 30 '16 at 5:40
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Manually raising (throwing) an exception in Python
...cific in your message, e.g.:
raise ValueError('A very specific bad thing happened.')
Don't raise generic exceptions
Avoid raising a generic Exception. To catch it, you'll have to catch all other more specific exceptions that subclass it.
Problem 1: Hiding bugs
raise Exception('I know Python!')...
How do you configure logging in Hibernate 4 to use SLF4J
...for logging. Hibernate 4.x uses jboss-logging . I am writing a standalone application which uses Hibernate 4, and SLF4J for logging.
...
DDD - the rule that Entities can't access Repositories directly
...lking about a bounded context. Each bounded context is essentially its own application. You might have a sophisticated approval system for getting things into the product catalog. In your original design the product was the center piece but in this bounded context the product catalog is. You still m...
Calculate relative time in C#
... This type of code is nearly impossible to localize. If your app only needs to remain in English, then fine. But if you make the jump to other languages, you will hate yourself for doing logic like this. Just so y'all know...
– Nik Reiman
May 23 '...