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What does -> mean in Python function definitions?

...to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return values. There's no preconceived use case, but the PEP suggests several. One very handy one is to al...
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In C#, should I use string.Empty or String.Empty or “” to intitialize a string?

... Use whatever you and your team find the most readable. Other answers have suggested that a new string is created every time you use "". This is not true - due to string interning, it will be created either once per assembly or once per AppDo...
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How to perform a mysqldump without a password prompt?

I would like to know the command to perform a mysqldump of a database without the prompt for the password. 13 Answers ...
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Xcode debugger doesn't print objects and shows nil, when they aren't

... Ah ok, I created an empty project and can now see all the differences in the Build Settings, the deployment property Strip debug symbols during copy was set to YES. – Binarian Nov 11 '13 at 11:32 ...
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Visual Studio : short cut Key : Duplicate Line

Is there a shortcut for Duplicate Line command in Visual Studio 2008? 30 Answers 3...
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In laymans terms, what does 'static' mean in Java? [duplicate]

... beginner to Java I'm still not sure what it means. Anybody fluent in Java and idiot? 6 Answers ...
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Is !important bad for performance?

I hate them, it defies the cascading nature of CSS, and if you don't use them with care you end up in a loop of adding more !important . ...
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Ruby class instance variable vs. class variable

...mmon to that class without having sub-classes automatically also get them (and vice-versa). With class variables, you have the convenience of not having to write self.class from an instance object, and (when desirable) you also get automatic sharing throughout the class hierarchy. Merging these t...
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Android: How to turn screen on and off programmatically?

... the traditional sense. It makes the screen as dim as possible. In the standard platform there is a limit to how dim it can be; if your device is actually allowing the screen to turn completely off, then it is some peculiarity of the implementation of that device and not a behavior you can count o...
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Ignoring time zones altogether in Rails and PostgreSQL

I'm dealing with dates and times in Rails and Postgres and running into this issue: 2 Answers ...