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How to import multiple .csv files at once?
...you have those CSVs in a single directory--your current working directory--and that all of them have the lower-case extension .csv.
If you then want to combine those data frames into a single data frame, see the solutions in other answers using things like do.call(rbind,...), dplyr::bind_rows() or ...
Vim: apply settings on files in directory
... newline ?"), or call function from them (I don't limit myself to coding standards, I also set the makefile to use depending on the current directory)
DRY: with modelines, a setting needs to be repeated in every file, if there are too many things to set or tunings to change, it will quickly become d...
Is there common street addresses database design for all addresses of the world? [closed]
I am a programmer and to be honest don't know street address structures of the world, just how in my country is structured :) so which is the best and common database design for storing street addresses? It should be so simple to use, fast to query and dynamic to store all street addresses of the w...
Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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Programmatically access currency exchange rates [closed]
I'm setting up an online ordering system but I'm in Australia and for international customers I'd like to show prices in US dollars or Euros so they don't have to make the mental effort to convert from Australian dollars.
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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
What is the difference between CROSS JOIN and FULL OUTER JOIN in SQL Server?
10 Answers
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How to implement Android Pull-to-Refresh
In Android applications such as Twitter (official app), when you encounter a ListView, you can pull it down (and it will bounce back when released) to refresh the content.
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Java Garbage Collection Log messages
...sample of these entries are posted below. I've searched around on Google and have not found solid explanations.
3 Answers...
Pure JavaScript Graphviz equivalent [closed]
...y embed Graphviz into my Node server as an extension, or even popen() it and stream over graph information in the .dot format.
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How to get box-shadow on left & right sides only
...8);
http://jsfiddle.net/YJDdp/
Edit
Add 2 more box-shadows for the top and bottom up front to mask out the that bleeds through.
box-shadow: 0 9px 0px 0px white, 0 -9px 0px 0px white, 12px 0 15px -4px rgba(31, 73, 125, 0.8), -12px 0 15px -4px rgba(31, 73, 125, 0.8);
http://jsfiddle.net/LE6Lz/
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