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How to efficiently build a tree from a flat structure?
I have a bunch of objects in a flat structure. These objects have an ID and a ParentID property so they can be arranged in trees. They are in no particular order.
Each ParentID property does not necessarily matches with an ID in the structure. Therefore their could be several trees emerging ...
Error: free(): invalid next size (fast):
What is this strange error I'm getting? I'm compiling C++ using g++ on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 times in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the time.
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How to determine if a list of polygon points are in clockwise order?
Having a list of points, how do I find if they are in clockwise order?
23 Answers
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Sometimes adding a WCF Service Reference generates an empty reference.cs
Sometimes adding a WCF Service Reference generates an empty reference.cs and I cannot reference the service anywhere in the project.
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What does the Visual Studio “Any CPU” target mean?
I have some confusion related to the .NET platform build options in Visual Studio 2008.
8 Answers
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Building a complete online payment gateway like Paypal [closed]
So this question isn't about integrating an existing payment gateway into my site. This is more of a architectural question.
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Why does C++ compilation take so long?
Compiling a C++ file takes a very long time when compared to C# and Java. It takes significantly longer to compile a C++ file than it would to run a normal size Python script. I'm currently using VC++ but it's the same with any compiler. Why is this?
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How is “=default” different from “{}” for default constructor and destructor?
I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question:
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Android - how do I investigate an ANR?
Is there a way of finding out where my app threw an ANR (Application Not Responding). I took a look at the traces.txt file in /data and I see a trace for my application. This is what I see in the trace.
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or (HTML5)
W3Schools.com and I'm pretty sure I remember seeing W3C.org state that <menu> should be used for Toolbar menus and listing form control commands.
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