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How do I delete rows in a data frame?
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The key idea is you form a set of the rows you want to remove, and keep the complement of that set.
In R, the complement of a set is given by the '-' operator.
So, assuming the data.frame is called myData:
myData[-c(2, 4, 6), ] # notice the...
How to get innerHTML of DOMNode?
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{
$innerHTML = "";
$children = $element->childNodes;
foreach ($children as $child)
{
$innerHTML .= $element->ownerDocument->saveHTML($child);
}
return $innerHTML;
}
?>
Example:
<?php
$dom= new DOMDocument();
$dom->preserveWhiteSpac...
EditText, clear focus on touch outside
...ch handling fall through.
It's hacky, but it's the only thing that worked for me.
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Django - limiting query results
...y. That means a query will hit the database only when you specifically ask for the result.
So until you print or actually use the result of a query you can filter further with no database access.
As you can see below your code only executes one sql query to fetch only the last 10 items.
In [19]:...
Getting URL hash location, and using it in jQuery
...the version of jQuery you are using, may expose your users to XSS attacks. For more detail, see the discussion of the possible attack in the comments on this answer or this explanation on Security Stack Exchange.
You can use the location.hash property to grab the hash of the current page:
var has...
How to make RatingBar to show five stars
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Thanks for your answer. The problem was that you can't use android:layout_width="fill_parent" since the RatingBar apperenty ignores the android:numStars othervise. :-/
– Roland
Oct 9 '10 at 18:...
MySQL Results as comma separated list
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You can use GROUP_CONCAT to perform that, e.g. something like
SELECT p.id, p.name, GROUP_CONCAT(s.name) AS site_list
FROM sites s
INNER JOIN publications p ON(s.id = p.site_id)
GROUP BY p.id, p.name;
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How to overwrite styling in Twitter Bootstrap
How can I overwrite the stylings in Twitter Bootstrap? For instance, I am currently using a .sidebar class that has the CSS rule 'float: left;' How can I change this so that it goes to the right instead? I'm using HAML and SASS but am relatively new to web development.
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Logging best practices [closed]
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Update: For extensions to System.Diagnostics, providing some of the missing listeners you might want, see Essential.Diagnostics on CodePlex (http://essentialdiagnostics.codeplex.com/)
Frameworks
Q: What frameworks do you use?
A:...
Make anchor link go some pixels above where it's linked to
I'm not sure the best way to ask/search for this question:
21 Answers
21
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