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Check if element exists in jQuery [duplicate]
...an element exists if the element is created by .append() method?
$('elemId').length doesn't work for me.
8 Answers
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The SQL OVER() clause - when and why is it useful?
...itioning By do?
Why can't I make a query with writing Group By SalesOrderID ?
8 Answers
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Pandas aggregate count distinct
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How about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user...
jQuery to retrieve and set selected option value of html select element
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The way you have it is correct at the moment. Either the id of the select is not what you say or you have some issues in the dom.
Check the Id of the element and also check your markup validates at here at W3c.
Without a valid dom jQuery cannot work correctly with the selectors...
Display open transactions in MySQL
I did some queries without a commit. Then the application was stopped.
4 Answers
4
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Convert JSON String to JSON Object c#
...rked for me. Using JObject after replaced double quotes for single quote, did the trick. Thanks!!!
– Carlos Parra
Jul 23 '19 at 16:46
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What's the $unwind operator in MongoDB?
...f adding and obtaining the data from your storage locations.
That being said, in order to understand the concept behind the $unwind parameter, you first must understand what the use case that you are trying to quote is saying. The example document from mongodb.org is as follows:
{
title : "this i...
Inserting HTML elements with JavaScript
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Using document fragments is very quick; faster than creating elements outside of the DOM and in certain situations faster than innerHTML.
Even though innerHTML is used within the function, it's all happening outside of the DOM so it's much faster than you'd think...
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Facebook Graph API v2.0+ - /me/friends returns empty, or only friends who also use my application
I am trying to get my friend name and ids with Graph API v2.0, but data returns empty:
7 Answers
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Android search with Fragments
...dy know of a tutorial or an example of how to implement the standard Android search interface with Fragment s? In other words, is it possible to put a standard search with a SearchManager in a Fragment?
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