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Checking if a key exists in a JavaScript object?
...3 can return false on it.)
Reference:
http://book.mixu.net/node/ch5.html
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How to overwrite styling in Twitter Bootstrap
...You can overwrite a CSS class by making it "more specific".
You go up the HTML tree, and specify parent elements:
div.sidebar { ... } is more specific than .sidebar { ... }
You can go all the way up to BODY if you need to:
body .sidebar { ... } will override virtually anything.
See this handy g...
List of Rails Model Types
...
:ip_address
:mac_address
For UI mapping (Model scaffold data type -> HTML), the next image has all the basic field types:
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Android LocationClient class is deprecated but used in documentation
...ntation.. https://developer.android.com/training/location/retrieve-current.html
*
* Please add Runtime permission here for android 6
* */
mLocationRequest = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLocationRequest != null) {
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How to tell whether a point is to the right or left side of a line
...s the cross product, in two dimensions: mathworld.wolfram.com/CrossProduct.html
– brianmearns
Sep 4 '13 at 0:53
4
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How to install Boost on Ubuntu
...via apt-get you can get this from boost.org/users/history/version_1_60_0.html and then expand it. Follow the excellent instructions above, remembering that LD Library Path is not the same as $PATH
– Andrew Killen
May 2 '17 at 10:51
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How to import an excel file in to a MySQL database
...load data capability. See http://dev.mysql.com/doc/refman/5.1/en/load-data.html
Look half way down the page, as it will gives a good example for tab separated data:
FIELDS TERMINATED BY '\t' ENCLOSED BY '' ESCAPED BY '\'
Check your data. Sometimes quoting or escaping has problems, and you need to a...
Peak-finding algorithm for Python/SciPy
...//docs.scipy.org/doc/scipy/reference/generated/scipy.signal.find_peaks_cwt.html
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How to filter multiple values (OR operation) in angularJS
... return ($scope.selectedGenres.indexOf(movie.genre) !== -1);
};
}
HTML:
<div ng-controller="MoviesCtrl">
<ul>
<li ng-repeat="movie in movies | filter:filterByGenres">
{{ movie.name }} {{ movie.genre }}
</li>
</ul>
</div&g...
Malloc vs new — different padding
... links about gcc: gcc.gnu.org/onlinedocs/gcc/Structure_002dPacking-Pragmas.html
– Stephane Rolland
Nov 20 '12 at 10:01
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