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Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?

...the other posts on tracking down the reasons for getting a SIGSEGV in an Android app. I plan to scour my app for possible NullPointers related to Canvas use, but my SIGSEGV barfs up a different memory address each time. Plus I've seen code=1 and code=2 . If the memory address was 0x00000000 ...
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What is the fastest way to get the value of π?

... fastest π I know of is the one with the digits hard coded. Looking at Pi and Pi[PDF], there are a lot of formulae. Here is a method that converges quickly — about 14 digits per iteration. PiFast, the current fastest application, uses this formula with the FFT. I'll just write the formula, since...
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Pointer to pointer clarification

...are doing is *ipp get the object at the address held in ipp which is ip1 and then assign to ip1 the value stored in ip2, which is the address of j. Simply & --> Address of * --> Value at share | ...
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~x + ~y == ~(x + y) is always false?

... Assume for the sake of contradiction that there exists some x and some y (mod 2n) such that ~(x+y) == ~x + ~y By two's complement*, we know that, -x == ~x + 1 <==> -1 == ~x + x Noting this result, we have, ~(x+y) == ~x + ~y <==> ~(x+y) + (x+y) == ~x + ~y...
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What is the best way to get all the divisors of a number?

...e dumb way (stopping at n/2) very cool, thank you! – Andrea Ambu Oct 5 '08 at 10:20 47 For those ...
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Injecting Mockito mocks into a Spring bean

... FYI: This approach won't work, if i want partial Autowiring and partial mocking in MyTestObject. – raksja Sep 16 '13 at 21:44 9 ...
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How to remove all line breaks from a string

I have a text in a textarea and I read it out using the .value attribute. 16 Answers 1...
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What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?

What is the difference between Unidirectional and Bidirectional associations? 4 Answers ...
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Xcode 4 and Core Data: How to enable SQL Debugging

I'm working on a universal iOS app and I'd like to see the raw SQL in the logs when I'm debugging. There is some info in this blog post about how to enable raw SQL logging for iOS Core Data development. The given example is for Xcode 3 and it's just not clear to me how to enable this in Xcode 4. ...
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Placing border inside of div and not on its edge

I have a <div> element and I want to put a border on it. I know I can write style="border: 1px solid black" , but this adds 2px to either side of the div, which is not what I want. ...