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Getting an object from an NSSet
...h enumerateObjectsUsingBlock or NSFastEnumeration), call containsObject to test for membership, use anyObject to get a member (not random), or convert it to an array (in no particular order) with allObjects.
A set is appropriate when you don't want duplicates, don't care about order, and want fast ...
Google App Engine: Is it possible to do a Gql LIKE query?
...ok at the properties ListProperty and StringListProperty. When an equality test is done on these properties, the test will actually be applied on all list members, e.g., list_property = value tests if the value appears anywhere in the list.
Sometimes this feature might be used as a workaround to th...
Best practices for overriding isEqual: and hash
...eeded to get my isEqual: and hash methods implemented with one catch. When testing object instance variables in isEqual: the example code uses:
if (![(id)[self name] isEqual:[aWidget name]])
return NO;
This repeatedly failed (i.e., returned NO) without and error, when I knew the objects were ...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...detected. This function returns the angle.
One noteworthy finding when we tested the component is that $MotionEvent.ACTION_MOVE$ is too sensitive. A tiny movement with fingers will invoke this event, so it detects the rotation even when we do not intend it to. In order to solve this problem, we add...
Get Output From the logging Module in IPython Notebook
...logger = logging.getLogger()
logger.setLevel(logging.DEBUG)
logging.debug("test")
According to logging.basicConfig:
Does basic configuration for the logging system by creating a
StreamHandler with a default Formatter and adding it to the root
logger. The functions debug(), info(), warning(...
How can I make the Android emulator show the soft keyboard?
...y not displaying when it should. However, I don't have a device handy for testing. The problem is that the emulator never shows the soft keyboard .
...
How to Pass Parameters to Activator.CreateInstance()
... - depending on your application this may not even register in performance-tests at all.
– Dai
May 19 at 4:41
...
Numpy first occurrence of value greater than existing value
...t suspicious. argmax does not seem to stop at the first True. (This can be tested by creating boolean arrays with a single True at different positions.) The speed is probably explained by the fact that argmax does not need to create an output list.
– DrV
Oct 8 ...
How to make a class property? [duplicate]
...bar
@bar.setter
def bar(cls, value):
cls._bar = value
# test instance instantiation
foo = Bar()
assert foo.bar == 1
baz = Bar()
assert baz.bar == 1
# test static variable
baz.bar = 5
assert foo.bar == 5
# test setting variable on the class
Bar.bar = 50
assert baz.bar == 50
asse...
When does ADT set BuildConfig.DEBUG to false?
...false, which might give you the false impression that it is not working.
I tested this with logging statements like
if (com.mypackage.BuildConfig.DEBUG)
Log.d(TAG, location.getProvider() + " location changed");
When testing, my Log statements no longer produce any output.
...