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Determine the type of an object?
...f object you also have the:
__class__
attribute. Here is a sample taken from Python 3.3 console
>>> str = "str"
>>> str.__class__
<class 'str'>
>>> i = 2
>>> i.__class__
<class 'int'>
>>> class Test():
... pass
...
>>> a = Tes...
Is there a Mutex in Java?
...erations than can be obtained using synchronized methods and statements.", from: docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/… ...although you have a point. Argv's answer doesn't illustrate or explain these operations.
– FrustratedWithFormsDesigner
...
Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'
...the same thread , it fixed my problem.
If you call methods on WebView from any thread other than your app's UI thread, it can cause unexpected results. For example, if your app uses multiple threads, you can use the runOnUiThread() method to ensure your code executes on the UI thread:
Google ...
Transposing a NumPy array
...the concept of a row/column vector. Numpy is idiosyncratic to folks coming from a lot of places, not just matlab.
– eric
Dec 29 '18 at 16:15
...
Get the first element of an array
... to get the key: (execute it after reset)
echo key($arr); // Echoes "4"
From PHP's documentation:
mixed reset ( array &$array );
Description:
reset() rewinds array's internal pointer to the first element and returns the value of the first array element, or FALSE if the array is
em...
How do I call ::std::make_shared on a class with only protected or private constructors?
...e (tested with g++ 4.9.0). Without real parameters it tries to construct A from {}, although I have no idea why, and fails. I think making the this_is_private constructor private and providing a static method to create it fixes it, as there should be no way to access this method from the outside unl...
How do I convert a datetime to date?
...
From the documentation:
datetime.datetime.date()
Return date object with same year, month and day.
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Text size and different android screen sizes
...ablet (720x1280 mdpi, 800x1280 mdpi, etc).
Using the size qualifiers from table 2, your application can switch
between your different layout resources for handsets and tablets using
any number you want for width and/or height. For example, if 600dp is
the smallest available width support...
Is there a reason that Swift array assignment is inconsistent (neither a reference nor a deep copy)?
...
From the official documentation of the Swift language:
Note that the array is not copied when you set a new value with subscript syntax, because setting a single value with subscript syntax does not have the potential to ...
mysql Foreign key constraint is incorrectly formed error
...ble1 is the parent table with a column ID and table2 with a column IDFromTable1 (not the actual name) when I put a FK on IDFromTable1 to ID in table1 I get the error Foreign key constraint is incorrectly formed error . I would like to delete table 2 record if table1 record gets delet...