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How can you represent inheritance in a database?
...problems identified for the single table method:
Mandatory attributes can now be enforced with NOT NULL.
Adding a new subtype requires adding a new table instead of adding columns to an existing one.
There is also no risk that an inappropriate attribute is set for a particular subtype, such as th...
System.IO.Packaging
... When I went to the link in the answer, I didn't see how I would know to add the WindowsBase.Net library. I added it and I now have access to system.io.packaging. So thanks for that, but could you explain what I'm not seeing about knowing to access the system.io.packaging through the Windo...
Getting indices of True values in a boolean list
...tches that are on. Here "on" will equal True and "off" equal False . So now I just want to return a list of all the True values and their position. This is all I have but it only return the position of the first occurrence of True (this is just a portion of my code):
...
Relative paths in Python
...ally, at the shell:
~ % python foo.py
/Users/jason
foo.py
However, I do know that there are some quirks with __file__ on C extensions. For example, I can do this on my Mac:
>>> import collections #note that collections is a C extension in Python 2.5
>>> collections.__file__
'/S...
SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...wever, that doesn't actually appear to help. That means
that there's no known workaround at this time other than relaunching
the app.
The issue appears to be related to memory pressure, so perhaps being
more aggressive in handling memory warnings may alleviate the problem
https://forums...
HTML encoding issues - “” character showing up instead of “ ”
...he HTML itself, which is always a highly dodgy business.
Well anyway, for now you can add one of the following to your document's <head> and see if that makes it look right in the browser:
for HTML4: <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
for HTML5: <m...
'git add --patch' to include new files?
...vert 4: add untracked
5: patch 6: diff 7: quit 8: help
What now> a
1: another-new.java
2: new.java
Add untracked>> 2
1: another-new.java
* 2: new.java
Add untracked>>
added one path
*** Commands ***
1: status 2: update 3: revert 4: add untracked
5: pat...
Should MySQL have its timezone set to UTC?
...e server as long as you have the time set right for the current timezone, know the timezone of the datetime columns that you store, and are aware of the issues with daylight savings time.
On the other hand if you have control of the timezones of the servers you work with then you can have everythin...
How do I configure a Python interpreter in IntelliJ IDEA with the PyCharm plugin?
... project, where I have used Selenium and added that using external path
Now you need to open Project Structure and go to SDK Section
Now Select your project's virtual environment. In the Classpath tab add the PYTHONPATH by clicking + button
and now the modules will be recognized
...
Using HTML5/JavaScript to generate and save a file
...
If you know the source url that you want to download this is the best solution!
– sidonaldson
Aug 16 '13 at 14:58
...