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【iOS】有关苹果iOS App的一些进展、BluetoothLE蓝牙拓展等 - App Inventor...
...no are you using? One challenge here is that Apple has restricted access somewhat to what I would call "classic" Bluetooth due to energy consumption concerns. They do allow use of Bluetooth low energy without issue, which we do plan to implement full support for. Knowing what kind of Ardui...
How to generate a random integer number from within a range
...s out a Poisson distribution: any two nonoverlapping subintervals of the same size are equally likely and independent. For a finite set of values, this implies a uniform distribution and also ensures that the values of rand() are nicely scattered.
This means that the only correct way of changing t...
How to detect shake event with android?
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From the code point of view, you need to implement the SensorListener:
public class ShakeActivity extends Activity implements SensorListener
You will need to acquire a SensorManager:
sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);
And register this se...
Running single test from unittest.TestCase via command line
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This works as you suggest - you just have to specify the class name as well:
python testMyCase.py MyCase.testItIsHot
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Git interoperability with a Mercurial Repository
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Update from June 2012. Currently there seem to be the following methods for Git/Hg interoperability when the developer wants to work from the git side:
Install Mercurial and the hg-git extension. You can do the latter using your package manager, or with easy_install hg-git. Then make su...
Is null an Object?
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If null were an Object, it would support the methods of java.lang.Object such as equals(). However, this is not the case - any method invocation on a null results in a NullPointerException.
And this is what the Java Language Specification has to say on this topic:
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How to scroll to bottom in a ScrollView on activity startup
I am displaying some data in a ScrollView. On activity startup (method onCreate) I fill the ScrollView with data and want to scroll to the bottom.
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Autoresizing masks programmatically vs Interface Builder / xib / nib
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Error java.lang.OutOfMemoryError: GC overhead limit exceeded
I get this error message as I execute my JUnit tests:
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What's the rationale for null terminated strings?
... language; each treats strings much
like vectors of integers and
supplements general rules by a few
conventions. In both BCPL and B a
string literal denotes the address of
a static area initialized with the
characters of the string, packed into
cells. In BCPL, the first packed byte
c...