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How do I view the type of a scala expression in IntelliJ

... Select expression and type Alt + =. If you want to change the shortcut go to Preferences > Keymap and enter "Type Info" in the search field. In older versions, it's Shift + Ctrl + Alt + T. ...
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What's the equivalent for eclipse's ALT+UP/DOWN (move line) in Visual Studio?

In Eclipse, selecting a line and pressing Alt + ↑ / ↓ will move the line up and down, a quick way to avoid copy&paste. Is there an equivalent in Visual Studio? ...
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How to get the selected index of a RadioGroup in Android

Is there an easy way to get the selected index of a RadioGroup in Android or do I have to use OnCheckedChangeListener to listen for changes and have something that holds the last index selected? ...
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Best way to add Activity to an Android project in Eclipse?

...th Eclipse 3.5.2 on Ubuntu 10.04. When the add dialog comes up, it has two selections... No, now only one "Create a new element at the top level, in Application." Ne;low that there is a text entry field and below that, a box with selections for Activity, Activity Alias, Meta Data and so on. Below th...
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MySQL error: key specification without a key length

...d, and the trick is to choose a number N that’s long enough to give good selectivity, but short enough to save space. The prefix should be long enough to make the index nearly as useful as it would be if you’d indexed the whole column. Before we go further let us define some important terms. In...
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How to join int[] to a character separated string in .NET?

... var ints = new int[] {1, 2, 3, 4, 5}; var result = string.Join(",", ints.Select(x => x.ToString()).ToArray()); Console.WriteLine(result); // prints "1,2,3,4,5" EDIT: As of (at least) .NET 4.5, var result = string.Join(",", ints.Select(x => x.ToString()).ToArray()); is equivalent to: v...
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How do I install Eclipse Marketplace in Eclipse Classic?

...available add the site "Juno - http://download.eclipse.org/releases/juno" Select and expand general purpose tools Select and install Marketplace client share | improve this answer | ...
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How to call Android contacts list?

...TION_PICK on the People.CONTENT_URI, then return to this Activity when the selection is made (or canceled). startActivityForResult(intent, PICK_CONTACT); 3. Listening for the Result Also in your Activity, override the onActivityResult method to listen for the return from the 'select a contact' A...
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Selecting only numeric columns from a data frame

...traightforward, and robust to use on database-back-ended tibbles: dplyr::select_if(x, is.numeric) share | improve this answer | follow | ...
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intellij - spring is not being recognized (Unmapped Spring configuration)

...alog (either by clicking the warning or through file=>project structure select the modules item in the left hand list go through and right click on the modules with missing files and select Add=>Spring in the new tab click the + button you should now see a list of the xml files. Check the box...