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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]

... answered Mar 8 '12 at 12:09 Aaron left Stack OverflowAaron left Stack Overflow 33.4k44 gold badges6868 silver badges126126 bronze badges ...
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bash: pip: command not found

... recommend doing that – covfefe Oct 8 '15 at 20:19 4 sudo apt install python-pip? ...
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How to check file input size with jQuery?

... 8 Answers 8 Active ...
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Getting a 404 from WMSvc via MSDeploy.exe

From Windows 8 to Windows Server 2012 (IIS 8) with Web Management Services installed and working, I can use IIS Manager on W8 box to manage the remote server but I get a 404.7 from WMSvc when I execute the following command: ...
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Convert datetime to Unix timestamp and convert it back in python

... 108 What you missed here is timezones. Presumably you've five hours off UTC, so 2013-09-01T11:00:00...
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Random float number generation

... 388 rand() can be used to generate pseudo-random numbers in C++. In combination with RAND_MAX and ...
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What is the recommended approach towards multi-tenant databases in MongoDB?

...rt site (way back added since it's gone): https://web.archive.org/web/20140812091703/http://support.mongohq.com/use-cases/multi-tenant.html The guys stated to avoid 2nd options at any cost, which as I understand is not particularly specific to mongodb. My impression is that this is applicable for m...
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Most efficient way to check for DBNull and then assign to a variable?

... | edited Jan 24 '18 at 10:50 community wiki ...
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How do I sort an observable collection?

...rting progress showing how the collection is pivoted: Sue aged 5 move from 8 to 0 (5),51,12,13,39,14,41,20,39,19, Jack aged 12 move from 2 to 1 5,(12),51,13,39,14,41,20,39,19, Bob aged 13 move from 3 to 2 5,12,(13),51,39,14,41,20,39,19, John aged 14 move from 5 to 3 5,12,13,(14),51,39,41,20,39,19, K...
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Reading ePub format

...ed the zip file to in (3) plus the base directory of the OPF file in (6)) 8) create an NSURL using fileURLWithPath:, where the path is the full path from (7c). Load this request using the UIWebView you created in (1). You'll need to implement forward / backward buttons or swipes or something so th...