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Undefined reference to vtable
...ve functionA.
The definition for the above functionB.
Class C Contains: Now you're writing a Class C in which you are going to derive it from Class A.
Now if you try to compile you will get Undefined reference to vtable for Class C as error.
Reason:
functionA is defined as pure virtual and it...
Why does pycharm propose to change method to static
...ople have answered with this flavour response. I would add though, if you know it's definitely not going to be a static method, then include a "throw NotImplementedError" while you are there to be certain you don't use it without completing it.
– Richard Green
...
How to install mongoDB on windows?
...loaded the 32bit windows version, but have no idea on how to continue from now on.
15 Answers
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Format a datetime into a string with milliseconds
...hind seconds), use this:
from datetime import datetime
print datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
>>>> OUTPUT >>>>
2020-05-04 10:18:32.926
Note: For Python3, print requires parentheses:
print(datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3])
...
Installing Ruby Gem in Windows
...
I downloaded this and now I am stuck with a file that crashes my pc when i try to run, move or delete it, even after rebooting. Never had this before.
– Daan Luttik
May 30 '15 at 12:45
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Can't install PIL after Mac OS X 10.9
... tool, in Mountain Lion this was an option on the xcode Download page, but now you have to register with your apple id and download from: https://developer.apple.com/downloads/
Look for Command Line Tools (OS X Mavericks) for Xcode
2) Install everything needed for python (using brew), I believe yo...
Undoing a git rebase
Does anybody know how to easily undo a git rebase?
18 Answers
18
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Why use jQuery on() instead of click()
...r but don't exist when the DOM is first loaded.
The reason that live() is now depreciated is because it was poorly implemented. In order to use live(), you had to be able to select at least one element in the DOM initially (I believe). It also caused a copy of the function to run to be bound to e...
Memory management in Qt?
...
The link in the answer is now broken (not surprising after nearly 4 years...), maybe it was something like this qt-project.org/doc/qt-4.8/objecttrees.html ?
– PeterSW
Feb 6 '14 at 19:37
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In Ruby on Rails, how do I format a date with the “th” suffix, as in, “Sun Oct 5th”?
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>> require 'activesupport'
=> []
>> t = Time.now
=> Thu Oct 02 17:28:37 -0700 2008
>> formatted = "#{t.strftime("%a %b")} #{t.day.ordinalize}"
=> "Thu Oct 2nd"
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