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How to find out which view is focused?
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Call getCurrentFocus() on the Activity.
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How to use git bisect?
...n. Imagine that you have the following development history:
... --- 0 --- 1 --- 2 --- 3 --- 4* --- 5 --- current
You know that your program is not working properly at the current revision, and that it was working at the revision 0. So the regression was likely introduced in one of the commits 1, ...
Is there a performance difference between a for loop and a for-each loop?
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16 Answers
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What is the “assert” function?
...mp;& "Whoops, length can't possibly be negative! (didn't we just check 10 lines ago?) Tell jsmith");
Or else like this:
assert(("Length can't possibly be negative! Tell jsmith", length >= 0));
When you're doing a release (non-debug) build, you can also remove the overhead of evaluating a...
How to properly check if std::function is empty in C++11?
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105
You're not checking for an empty lambda, but whether the std::function has a callable target s...
iphone ios running in separate thread
...});
});
If you haven't done so already, check out the videos from WWDC 2010 on libdispatch/GCD/blocks.
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Rails 3 execute custom sql query without a model
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168
Maybe try this:
ActiveRecord::Base.establish_connection(...)
ActiveRecord::Base.connection.ex...
Can I comment out a line in a .git/config file?
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1 Answer
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Byte[] to InputStream or OutputStream
...utputStream to a blob using the getBinaryStream and setBinaryStream methods1, and you can also get and set the bytes directly.
(In general, you should take appropriate steps to handle any exceptions, and close streams. However, closing bis and bos in the example above is unnecessary, since they ar...
Integrating the ZXing library directly into my Android application
...to make a standalone barcode scanner (as a proof of concept) to an Android 1.6 phone.
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