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Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
I've been reading 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 addres...
Why do pthreads’ condition variable functions require a mutex?
I’m reading up on pthread.h ; the condition variable related functions (like pthread_cond_wait(3) ) require a mutex as an argument. Why? As far as I can tell, I’m going to be creating a mutex just to use as that argument? What is that mutex supposed to do?
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What modern C++ libraries should be in my toolbox? [closed]
...ACE
Boost.Asio
ICE
Testing
Boost.Test
Google Test
UnitTest++
doctest
Threading
Boost.Thread
Version Control
libgit2
Web Application Framework
CppCMS
Wt
XML
Libxml2
pugixml
RapidXml
TinyXML
Xerces-C++
Links to additional lists of open source C++ libraries:
http://en.cppreference....
Cross-thread operation not valid: Control accessed from a thread other than the thread it was create
... a control. I don't want to change the value of a control from the child thread. I'm not going to do it ever from a child thread.
So only accessing the value so that corresponding data can be fetched from the database.
The solution you want then should look like:
UserContrl1_LOadDataMethod()
{
...
Show pending migrations in rails
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How do you read the output of this command? If the status of a row is "down", does that mean it's a pending migration?
– Dennis
Feb 13 '15 at 15:00
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NoSql Crash Course/Tutorial [closed]
...s using some sort of key/value pairing system. You use this all the time already I assume. For instance. in javascript you can create an object named foo and then do foo['myobj'] = myobj; to store stuff in the object.
All NoSQL servers really do is give you a way to add/delete/query massive arrays ...
How to convert DateTime to/from specific string format (both ways, e.g. given Format is “yyyyMMdd”)?
...ou may use try-parse pattern:
DateTime.TryParse
DateTime.TryParseExact
Read more about Custom Date and Time Format Strings.
Converting DateTime to a string:
To return a DateTime as a string in "yyyyMMdd" format, you may use ToString method.
Code snippet example: string date = DateTime.ToStri...
Should 'using' directives be inside or outside the namespace?
...ue that Math might be a bad name for a user-defined class, since there's already one in System; the point here is just that there is a difference, and it affects the maintainability of your code.
It's also interesting to note what happens if Foo is in namespace Outer, rather than Outer.Inner. In th...
“X-UA-Compatible” content=“IE=9; IE=8; IE=7; IE=EDGE”
...recent version's standards are.
For more information, there is plenty to read about on MSDN,
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How to validate an email address using a regular expression?
...y from which I quote:
There is some danger that common usage and widespread sloppy coding will establish a de facto standard for e-mail addresses that is more restrictive than the recorded formal standard.
That is no better than all the other non-RFC patterns. It isn’t even smart enough to h...