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How to use the PI constant in C++
I want to use the PI constant and trigonometric functions in some C++ program. I get the trigonometric functions with include <math.h> . However, there doesn't seem to be a definition for PI in this header file.
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In Objective-C, how do I test the object type?
I need to test whether the object is of type NSString or UIImageView . How can I accomplish this? Is there some type of "isoftype" method?
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How do I clone into a non-empty directory?
I have directory A with files matching directory B. Directory A may have other needed files. Directory B is a git repo.
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How to create a file with a given size in Linux?
For testing purposes I have to generate a file of a certain size (to test an upload limit).
13 Answers
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Evenly distributing n points on a sphere
I need an algorithm that can give me positions around a sphere for N points (less than 20, probably) that vaguely spreads them out. There's no need for "perfection", but I just need it so none of them are bunched together.
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How do I reference a Django settings variable in my models.py?
This is a very beginner question. But I'm stumped. How do I reference a Django settings variable in my model.py?
2 Answer...
Optimising Android application before release [closed]
I'm in a " special " situation about efficiency of my program. Now I'm at a phase where I need to improve the performance of the application and reduce battery consumption .
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How to use the CancellationToken property?
Compared to the preceding code for class RulyCanceler , I wanted to run code using CancellationTokenSource .
5 Answers
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Android SDK Manager Not Installing Components
Not sure what I'm doing wrong here. I installed the Android SDK Manager, and am now trying to install a platform like the Android Dev website suggests. Once I clicked install I got an error stating that the Manager could not create a temp folder within the Android directory. So I created it. Now I'm...
“The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine” Error in importing
I have a 64 bit windows 7 and SQLServer 2008 R2 (64 bit)
6 Answers
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