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In MySQL, how to copy the content of one table to another table within the same database?
...at w3school page is for a different SQL, not intended for MySQL. w3schools now has error reporting, if you find issues report it on their site to assist with accurate knowledge.
– Nightwolf
Sep 27 '17 at 10:50
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Difference between len() and .__len__()?
Is there any difference between calling len([1,2,3]) or [1,2,3].__len__() ?
4 Answers
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How do I initialize the base (super) class?
...t(foo)
Because python knows about old- and new-style classes, there are different ways to invoke a base method, which is why you've found multiple ways of doing so.
For completeness sake, old-style classes call base methods explicitly using the base class, i.e.
def doit(self, foo):
return X.do...
What is the purpose of python's inner classes?
...es confuse me. Is there something that can't be accomplished without them? If so, what is that thing?
9 Answers
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ng-model for `` (with directive DEMO)
...t" ng-model="uploadme.src"/>
There are no changes to the directive.
Now, it all works like expected. I can grab the value of uploadme.src from my controller using $scope.uploadme.
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imp...
Set attributes from dictionary in python
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If you pass initial data as def __init__(self,**initial_data) you get the added benefit of having an init method that can also do keyword arguments too (e.g. "e = Employee(name='Oscar')" or just take in a dictionary (e.g. "e ...
Define a lambda expression that raises an Exception
...ef raise_(ex):
raise ex
y = lambda: raise_(Exception('foobar'))
But if your goal is to avoid a def, this obviously doesn't cut it. It does, however allow you to conditionally raise exceptions, e.g.:
y = lambda x: 2*x if x < 10 else raise_(Exception('foobar'))
Alternatively you can rai...
How do I remove code duplication between similar const and non-const member functions?
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@VioletGiraffe we know that the object wasn't originally created const, as it is a non-const member of a non const object, which we know because we are in a non-const method of said object. The compiler doesn't make this inference, it follows a...
python NameError: global name '__file__' is not defined
... shell when you C-c C-p? python-shell. Is there a way to use this shell as if it were a terminal running the file? There are 3 options for running the shell : CMD DEDICATED SHOW Would one of them do this?
– sinekonata
Jul 2 at 0:43
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How to insert a SQLite record with a datetime set to 'now' in Android application?
...a couple options you can use:
You could try using the string "(DATETIME('now'))" instead.
Insert the datetime yourself, ie with System.currentTimeMillis()
When creating the SQLite table, specify a default value for the created_date column as the current date time.
Use SQLiteDatabase.execSQL to ins...