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'Missing contentDescription attribute on image' in XML

... Follow this link for solution: Android Lint contentDescription warning Resolved this warning by setting attribute android:contentDescription for my ImageView android:contentDescription="@string/desc" Android Lint support in ADT 16 throws this warning to e...
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What arguments are passed into AsyncTask?

I don't understand what I am supposed to put in here and where these arguments end up? What exactly should I put, and where exactly will it go? Do I need to include all 3 or can I include 1,2,20? ...
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How to delete a row by reference in data.table?

...estion. data.table can't delete rows by reference yet. data.table can add and delete columns by reference since it over-allocates the vector of column pointers, as you know. The plan is to do something similar for rows and allow fast insert and delete. A row delete would use memmove in C to budge u...
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Tablix: Repeat header rows on each page not working - Report Builder 3.0

...porting Services does not recognize which textboxes are the column headers and setting RepeatColumnHeaders property to True doesn't work. Instead, you need to: Open Advanced Mode in the Groupings pane. (Click the arrow to the right of the Column Groups and select Advanced Mode.) In the Row Gr...
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When is -XAllowAmbiguousTypes appropriate?

...er non-ambiguous types. So let's compare the contexts of the two functions and look for functional dependencies. class ApplySym sig f sym | sig sym -> f, f -> sig sym class SyntacticN f internal | f -> internal sugarSym :: ( sub :<: AST sup , ApplySym sig fi sup ...
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what is the difference between GROUP BY and ORDER BY in sql

...i think the second example on the page in the link is sufficient to understand the difference tutorialspoint.com/sql/sql-group-by.htm – nishantbhardwaj2002 Apr 29 '15 at 9:57 ...
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add created_at and updated_at fields to mongoose schemas

Is there a way to add created_at and updated_at fields to a mongoose schema, without having to pass them in everytime new MyModel() is called? ...
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Need some clarification about beta/alpha testing on the developer console

The Android developer console has 3 tabs for publishing the app's apk file: alpha, beta and production, as shown here: 4 An...
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Declare and initialize a Dictionary in Typescript

...ke use of the typed dictionary by splitting your example up in declaration and initialization, like: var persons: { [id: string] : IPerson; } = {}; persons["p1"] = { firstName: "F1", lastName: "L1" }; persons["p2"] = { firstName: "F2" }; // will result in an error ...
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Visual Studio (2008) 'Clean Solution' Option

... It deletes all the compiled and temporary files associated with a solution. It ensures that the next build is a full one, rather than only changed files being recompiled. share...