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package R does not exist

...ou need to tell your IDE to regenerate these files somehow: in IntelliJ, select Tools > Android > Generate sources for <project> (If you know the way in another IDE, feel free to edit this answer!) share ...
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Laravel Check If Related Model Exists

...method calls through to an Eloquent query Builder, which is set up to only select the related objects. That Builder in turn passes unknown method calls through to its underlying query Builder. This means you can use the exists() or count() methods directly from a relation object: $model->relati...
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How do I find which program is using port 80 in Windows? [duplicate]

...@{}; Get-Process | ForEach-Object { $proc.Add($_.Id, $_) }; netstat -aon | Select-String "\s*([^\s]+)\s+([^\s]+):([^\s]+)\s+([^\s]+):([^\s]+)\s+([^\s]+)?\s+([^\s]+)" | ForEach-Object { $g = $_.Matches[0].Groups; New-Object PSObject | Add-Member @{ Protocol = $g[1].Value } ...
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Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)

... This worked wonderfully for me as opposed to the selected answer. For some reason "Require all granted" by itself as that answer suggests didn't work as it instantly crashed XAMPP. But this answer worked with those between <directory> so thanks for the answer. ...
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iOS Simulator failed to install the application

...had to remove folder ~/Library/Application Support/iPhone Simulator/6.0 (I selectively removed for 6.0 - other iOS versions were unaffected in my case). – mklement0 Aug 2 '13 at 13:53 ...
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Auto Generate Database Diagram MySQL [closed]

...the beginning of every project. Is there a tool out there that will let me select specific tables and then create a database diagram for me based on a MySQL database? Preferably it would allow me to edit the diagram afterward since none of the foreign keys are set... ...
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How to pip or easy_install tkinter on Windows

... When installing make sure that under Tcl/Tk you select Will be installed on hard drive. If it is installing with a cross at the left then Tkinter will not be installed. The same goes for Python 3: ...
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When to use Hadoop, HBase, Hive and Pig?

... Consider that you work with RDBMS and have to select what to use - full table scans, or index access - but only one of them. If you select full table scan - use hive. If index access - HBase. s...
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Impossible to Install PG gem on my mac with Mavericks

...ks. Here's what I did: Install the xcode command line tools first: xcode-select --install Download and install the latest version of PostgreSQL (9.3.1), in my case I just used the graphical installer. Here's the link to the downloads page: http://www.enterprisedb.com/products-services-training/...
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Entity Framework Refresh context?

... where entry.EntityKey != null select entry.Entity); context.Refresh(RefreshMode.StoreWins, refreshableObjects); } Best advice anyway is, try to use a "short lived context" and you'll avoid this kind of problems. I wrote a couple of articles on th...