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Which is best way to define constants in android, either static class, interface or xml resource?
I'm developing an android application which uses web service to get data from server, for that I'm having three different set of URLs to point development system, test server and live server. It's difficult to change URL whenever I want to give application for testing/live. so I planned to make it a...
ASP.NET Web Site or ASP.NET Web Application?
When I start a new ASP.NET project in Visual Studio, I can create an ASP.NET Web Application or I can create an ASP.NET Web Site.
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Ruby: kind_of? vs. instance_of? vs. is_a?
What is the difference? When should I use which? Why are there so many of them?
4 Answers
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Purpose of #!/usr/bin/python3
I have noticed this in a couple of scripting languages, but in this example, I am using python. In many tutorials, they would start with #!/usr/bin/python3 on the first line. I don't understand why we have this.
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Call a function with argument list in python
I'm trying to call a function inside another function in python, but can't find the right syntax. What I want to do is something like this:
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IN vs OR in the SQL WHERE Clause
...h big databases, which performs better, IN or OR in the SQL Where -clause?
6 Answers
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How to create a density plot in matplotlib?
In R I can create the desired output by doing:
5 Answers
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Is there something like Annotation Inheritance in java?
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Unfortunately, no. Apparently it has something to do with programs that read the annotations on a class without loading them all the way. See Why is it not possible to extend annotations in Java?
However, types do inherit ...
PDO's query vs execute
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query runs a standard SQL statement and requires you to properly escape all data to avoid SQL Injections and other issues.
execute runs a prepared statement which allows you to bind parameters to avoid the need to escape or q...
GCD to perform task in main thread
...lback which might come from any thread. When I get this callback, then I would like to perform a certain task on the main thread.
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