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Understanding slice notation
...as Dataframes both the start and the stop are included when present in the index. For further info see the Pandas indexing documentation.
– vreyespue
May 29 '19 at 12:54
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What's the difference between a temp table and table variable in SQL Server?
...them:
Temporary Tables are real tables so you can do things like CREATE INDEXes, etc. If you have large amounts of data for which accessing by index will be faster then temporary tables are a good option.
Table variables can have indexes by using PRIMARY KEY or UNIQUE constraints. (If you want a ...
Fastest way to check if a value exists in a list
...value exists in a list (a list with millions of values in it) and what its index is?
13 Answers
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bootstrap popover not showing on top of all elements
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While this sorts out the original z-index issue, the popover doesn't stick with the original trigger element once you start dragging things around the screen, zooming in or out, or resizing the window. Looking for a better answer for this myself.
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“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...ll, false or [].
Example:
$o = [];
@$var = ["",0,null,1,2,3,$foo,$o['myIndex']];
array_walk($var, function($v) {
echo (!isset($v) || $v == false) ? 'true ' : 'false';
echo ' ' . (empty($v) ? 'true' : 'false');
echo "\n";
});
Test the above snippet in the 3v4l.org online PHP editor
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SQL Server Management Studio won't let me add an index to a table
When I right click on the indexes folder in the table the "New Index" menu item is grayed out. I don't understand why. I've deleted all data in the table just in case, and refreshed and restarted SSMS, but no luck. I'm using SQL Server 2012 Business Intelligence SP1 CTP.
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S3 Static Website Hosting Route All Paths to Index.html
... What I need is the ability to take all url requests and serve up the root index.html in my S3 bucket, rather than just doing a full redirect. Then my javascript application could parse the URL and serve the proper page.
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关于我们 · App Inventor 2 中文网，少儿编程陪伴者
... Q & A 常见问题解答 App Inventor 2 中文网 和 电教馆的网站...
Fast stable sorting algorithm implementation in javascript
...turing:
Function
var stableSort = (arr, compare) => arr
.map((item, index) => ({item, index}))
.sort((a, b) => compare(a.item, b.item) || a.index - b.index)
.map(({item}) => item)
It accepts input array and compare function:
stableSort([5,6,3,2,1], (a, b) => a - b)
It als...
How do I disable directory browsing?
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Create an .htaccess file containing the following line:
Options -Indexes
That is one option. Another option is editing your apache configuration file.
In order to do so, you first need to open it with the command:
vim /etc/httpd/conf/httpd.conf
Then find the line: Options Indexes Fol...