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What does the 'static' keyword do in a class?
...they can't refer to instance members. In the example given, main does not know which instance of the Hello class (and therefore which instance of the Clock class) it should refer to. static members can only refer to static members. Instance members can, of course access static members.
Side note: O...
DirectX SDK (June 2010) Installation Problems: Error Code S1023
... answer from Microsoft: http://blogs.msdn.com/b/chuckw/archive/2011/12/09/known-issue-directx-sdk-june-2010-setup-and-the-s1023-error.aspx
Summary if you'd rather not click through:
Remove the Visual C++ 2010 Redistributable Package version 10.0.40219 (Service Pack 1) from the system (both x86 an...
“Server” vs “Data Source” in connection string
I'm new to SqlServer, right now I have SqlLocalDb installed to work locally. Good, but I can see two connection strings typically and both works:
...
Shell script while read line loop stops after the first line
... path is the input parameter to the script) and do work against each line. Now, it seems only work with the very first line in the target file and stops after that line got processed. Is there anything wrong with my script?
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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...e of NumPy's extremely fast vectorized operations instead of our loops. We now have a 30x speedup over the original.
The simplest speed test with apply
The above example should clearly show how slow apply can be, but just so its extra clear let's look at the most basic example. Let's square a Se...
Multiple HttpPost method in Web API controller
...Parameter.Optional }
);
it's not a RESTful approach anymore, but you can now call your actions by name (rather than let the Web API automatically determine one for you based on the verb) like this:
[POST] /api/VTRouting/TSPRoute
[POST] /api/VTRouting/Route
Contrary to popular belief, there is ...
Attach IntelliJ IDEA debugger to a running Java process
...
IntelliJ will connect to the JVM and initiate remote debugging.
You can now debug the application by adding breakpoints to your code where desired. The output of the application will still appear wherever it did before, but your breakpoints will hit in IntelliJ.
...
How to serve static files in Flask
...rrassing. I've got an application that I threw together in Flask and for now it is just serving up a single static HTML page with some links to CSS and JS. And I can't find where in the documentation Flask describes returning static files. Yes, I could use render_template but I know the data i...
Avoiding instanceof in Java
...l from available data whether it likes or dislikes the Monster. It has to know what Class the Monster belongs to. That requires either an instanceof, or the Monster has to know in some way whether the OpinionatedElf likes it. Visitor doesn't get round that.
– DJClayworth
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C char array initialization
...har buf[10];
declares and defines the array. The array identifier buf is now an address in memory, and you cannot change where buf points through assignment. So
buf = // anything on RHS
is illegal. Your second and third code fragments are illegal for this reason.
To initialize an array, y...