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Creating a singleton in Python
...), {})): pass
class Logger(Singleton):
pass
An ironic aspect of this approach is that it's using subclassing to implement a metaclass. One possible advantage is that, unlike with a pure metaclass, isinstance(inst, Singleton) will return True.
Corrections
On another topic, you've probably alrea...
Technically what is the main difference between Oracle JDK and OpenJDK? [duplicate]
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Wow, such confuse. So after Java 7, when you package an app with OpenJDK-JRE, it's identical to packaging it with Oracle ServerJDK-JRE?
– Pacerier
Jul 28 '17 at 16:10
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How to dismiss ViewController in Swift?
...@naturalc: Be aware that if navigationController is nil and you put !, the app will crash
– jobima
Nov 18 '15 at 10:37
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How do I put hint in a asp:textbox
...eholder inside a asp:TextBox? When I say a hint I mean some text which disappears when the user clicks on it. Is there a way to achieve the same using html / css?
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Difference between rake db:migrate db:reset and db:schema:load
...he database). db:schema:load is used when you setup a new instance of your app.
I hope that helps.
UPDATE for rails 3.2.12:
I just checked the source and the dependencies are like this now:
db:create creates the database for the current env
db:create:all creates the databases for all envs
db:...
Run Java Code Online [closed]
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OpenCode appears to be a project at the MIT Media Lab for running Java Code online in a web browser interface. Years ago, I played around a lot at TopCoder. It runs a Java Web Start app, though, so you would need a Java run time insta...
Get URL of ASP.Net Page in code-behind [duplicate]
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This doesn't work if the application is not hosted on the server root but in a directory. If the application is hosted on www.contoso.com/app/ this will return just www.contoso.com
– linkerro
Oct 3 '12 at 8:58
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Perl build, unit testing, code coverage: A complete working example
...$ENV{HARNESS_PERL_SWITCHES}. For example: -MDevel::Cover=+ignore,.t$,+inc,/app/lib,-select,MyModule.pm where /app/lib is the application-private library and MyModule.pm is the module under test.
– Michael Carman
Apr 27 '10 at 16:33
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Default height for section header in UITableView
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From checking the defaults in my app it looks like for a grouped table the default is a height of 22 and for a non-grouped table the default is a height of 10.
If you check the value of the property sectionHeaderHeight on your tableview that should tell yo...
Architecture for merging multiple user accounts together
...formation - it could even be a single field - just a primary key. (For my application, I don't care about the user's email, name, or birth date - I just want to know they're the person who has been logging into this account all along.)
The third-party identities contain information relevant only t...