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How to get back to most recent version in Git?
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Community♦
111 silver badge
answered Oct 27 '11 at 5:04
haridsvharidsv
6,33233 gold badge...
Where do I find the bashrc file on Mac?
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Peter Party BusPeter Party Bus
1,7211111 silver badges1515 bronze badges
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Sample random rows in dataframe
...3677
5 0.4180331 -1.2592415
6 0.7572246 -0.5463655
7 -0.8996483 0.4231117
8 -1.0356774 -0.1640883
9 -0.3983045 0.7157506
10 -0.9060305 2.3234110
Then select some rows at random:
> df[sample(nrow(df), 3), ]
X1 X2
9 -0.3983045 0.7157506
2 -1.1334614 -0.1973846
10 ...
Persist javascript variables across pages? [duplicate]
...browsers, and are much easier to use and less fiddly than cookies.
http://www.w3.org/TR/2009/WD-webstorage-20091222/
https://www.w3.org/TR/webstorage/. (second edition)
Here are some sample code for setting and getting the values using sessionStorage and localStorage :
// HTML5 session Storage...
Tick symbol in HTML/XHTML
...pt X (poorly supported as of 2017)
⮽ (⚠ hex: ⮽ / dec: ⮽): ballot box with light X (poorly supported as of 2017)
???? (⚠ hex: 🗵 / dec: 🗵): ballot box with script X (poorly supported as of 2017)
???? (⚠ hex: 🗹 / dec: 🗹): bal...
“X does not name a type” error in C++
... // now that foo is defined, we can read that reference:
fr.fooInt = 111605;
fr.foDouble = 123.456;
}
By forward declaring User, MyMessageBox can still form a pointer or reference to it:
class User; // let the compiler know such a class will be defined
class MyMessageBox
{
public:
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How can I replace text with CSS?
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Community♦
111 silver badge
answered Jun 18 '13 at 3:51
Steven PennySteven Penny
76.1k454...
How do I get a file name from a full path with PHP?
...se here, you can just specifically ask for the filename. So pathinfo('/var/www/html/index.php', PATHINFO_FILENAME) should return 'index.php' PHP Pathinfo documentation
– OnethingSimple
Apr 19 '15 at 13:54
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Extracting text OpenCV
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singrium
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answered May 15 '14 at 8:07
dhanushkadhanushka
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Rails update_attributes without save?
...ord/lib/active_record/attribute_assignment.rb
Another cheat sheet:
http://www.davidverhasselt.com/set-attributes-in-activerecord/#cheat-sheet
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