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Is it possible to make abstract classes in Python?
...t recent call last):
File "<stdin>", line 1, in <module>
TypeError: Can't instantiate abstract class Abstract with abstract methods foo
>>> class StillAbstract(Abstract):
... pass
...
>>> StillAbstract()
Traceback (most recent call last):
File "<stdin>", ...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...e Visual Studio would spot this problem and issue a warning):
...
bool error; // uninitialised value
if(something)
{
error = true;
}
return error;
If Visual Studio didn't preinitialise variables to a known value, then this bug could potentially be hard to find. With preinitia...
`Apache` `localhost/~username/` not working
...ut nothing seems to work. The main pages are OK, the user pages give a 404 error. Any ideas?
– Gik
Apr 28 '16 at 12:45
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show 9 more comment...
How does the @property decorator work in Python?
... return self
if self.fget is None:
raise AttributeError("unreadable attribute")
return self.fget(obj)
def __set__(self, obj, value):
if self.fset is None:
raise AttributeError("can't set attribute")
self.fset(obj, value)
def __de...
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++
...DWORD)thrdaddr))
== (uintptr_t)0 )
{
err = GetLastError();
goto error_return;
}
The rest of _beginthreadex initializes per-thread data structure for CRT.
The advantage of using _beginthread* is that your CRT calls from thread will work correctly.
...
Why does the expression 0 < 0 == 0 return False in Python?
...ression 'success' if result_code == 0 else 'failure' can be rewritten as ('error', 'success')[result_code == 0], before this I had never seen a boolean used to select an item in a list/tuple.
– Andrew Clark
May 20 '11 at 16:24
...
Check if object value exists within a Javascript array of objects and if not add a new object to arr
...some(user => user.name = newUser.name);
if(userExists) {
return new Error({error:'User exists'})
}
users.push(newUser)
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Handling an empty UITableView. Print a friendly message
...ource
– onmyway133
Oct 20 '15 at 5:05
If you want to add buttons, you must do: tableView.backgroundView!.userInteract...
Circular gradient in android
...
answered Jul 17 '17 at 4:05
SuragchSuragch
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jquery - return value using ajax result on success
... to access the data returned
return data;
},
error: function() {
alert('Error occured');
}
});
}
Another possibility (which is effectively the same thing) is to call a function inside your success: callback that passes the data when it is avail...