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Determine the data types of a data frame's columns

...7.6, 167.6... $ hp <dbl> 110, 110, 93, 110, 175, 105, 245, 62, 95, 123, 123, 180, 180, 180, 205, 215... $ drat <dbl> 3.90, 3.90, 3.85, 3.08, 3.15, 2.76, 3.21, 3.69, 3.92, 3.92, 3.92, 3.07, 3.0... $ wt <dbl> 2.620, 2.875, 2.320, 3.215, 3.440, 3.460, 3.570, 3.190, 3.150, 3.440, 3...
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Python: How to create a unique file name?

... edited Aug 6 '17 at 2:45 Kostanos 7,36633 gold badges3737 silver badges5858 bronze badges answered Jun 2 '10 at 21:12 ...
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Mail multipart/alternative vs multipart/mixed

When creating email messages you are supposed to set the Content-Type to multipart/alternative when sending HTML and TEXT or multipart/mixed when sending TEXT and attachments. ...
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Emacs on Mac OS X Leopard key bindings

... @wic: Don't those characters have their own keys? – Kyle Cronin Oct 6 '09 at 16:33 1 ...
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Can't update Macports (with Mac OS X Mavericks)

After upgrading Mac OS X to newest version Mavericks, I attempted to selfupdate my Macports, but it failed: 9 Answers ...
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Recommended way to get hostname in Java

Which of the following is the best and most portable way to get the hostname of the current computer in Java? 11 Answers ...
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start MySQL server from command line on Mac OS Lion

... Other answers failed on OSX 10.7.5 w/ latest MySQL install. This one did the trick - thanks! – Irongaze.com Mar 6 '13 at 19:30 ...
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery

So I'm trying to move a "close" button to the left side when the user is on Mac and the right side when the user is on PC. Now I'm doing it by examining the user agent, but it can be too easily spoofed for reliable OS detection. Is there a surefire way to detect whether the OS on which the browser i...
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Where to install Android SDK on Mac OS X?

Where should the Android SDK be installed on Mac OS X? 12 Answers 12 ...
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How to import a module given its name as string?

...port a list of modules by doing this: >>> moduleNames = ['sys', 'os', 're', 'unittest'] >>> moduleNames ['sys', 'os', 're', 'unittest'] >>> modules = map(__import__, moduleNames) Ripped straight from Dive Into Python. ...