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What is the difference between ? and Object in Java generics?

...Eclipse seems to be giving me an option to choose between a type of Object and a type of '?'. 6 Answers ...
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Saving images in Python at a very high quality

... If you are using matplotlib and trying to get good figures in a latex document, save as an eps. Specifically, try something like this after running the commands to plot the image: plt.savefig('destination_path.eps', format='eps') I have found that ep...
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How to set enum to null

...perator for a nullable type. public Color? myColor = null; Or use the standard practice for enums that cannot be null by having the FIRST value in the enum (aka 0) be the default value. For example in a case of color None. public Color myColor = Color.None; ...
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Hide hidden(dot) files in github atom editor

... in the filter "tree-view" click on the "Settings" button of this package and then check the "Hide Ignored Names" choice. Now go to Edit > Preferences > Core . In the Ignored Names box enter .* this will hide all the files/folders which are usually hidden in other file explorers. If you wan...
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What is the difference between Class and Klass in ruby?

What is the difference between Class and Klass? 4 Answers 4 ...
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Determine if Android app is being used for the first time

I am currently developing an android app. I need to do something when the app is launched for the first time, i.e. the code only runs on the first time the program is launched. ...
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Declaring an enum within a class

...is declared within the Car class in order to limit the scope of the enum and to try not to "pollute" the global namespace. ...
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How to do a join in linq to sql with method syntax?

... special attention to the intermediate object that is created in the Where and Select clauses. Note that here we also look for any joined objects that have a property1 that matches one of the ones in the input list. I know this is a bit more complex than what the original asker was looking for, b...
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How would I get a cron job to run every 30 minutes?

...to add a crontab entry to execute a script every 30 minutes, on the hour and 30 minutes past the hour or something close. I have the following, but it doesn't seem to run on 0. ...
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how do you filter pandas dataframes by multiple columns

... filter a dataframe (df) by a single column, if we consider data with male and females we might: 6 Answers ...