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Download File Using Javascript/jQuery
...
Use an invisible <iframe>:
<iframe id="my_iframe" style="display:none;"></iframe>
<script>
function Download(url) {
document.getElementById('my_iframe').src = url;
};
</script>
To force the browser to download a file it would otherwi...
In MySQL queries, why use join instead of where?
... in the WHERE clause
SELECT *
FROM TABLE_A a,
TABLE_B b
WHERE a.id = b.id
Here's the query re-written using ANSI-92 JOIN syntax:
SELECT *
FROM TABLE_A a
JOIN TABLE_B b ON b.id = a.id
From a Performance Perspective:
Where supported (Oracle 9i+, PostgreSQL 7.2+, MySQL 3.23+, SQ...
Remove duplicated rows using dplyr
... I'm sure there is a simple solution but what if I want to get rid of both duplicate rows? I often work with metadata associated with biological samples and if I have duplicate sample IDs, I often can't be sure sure which row has the correct data. Safest bet is to dump both to avoid erron...
Chrome Extension how to send data from content script to popup.html
...g unnecessary permissions, making superflous calls to API methods etc).
I did not test your code myself, but from a quick overview I believe that correcting the following could result in a working solution (although not very close to optimal):
In manifest.json: Change the order of the content scri...
Retrieve only the queried element in an object array in MongoDB collection
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MongoDB 2.2's new $elemMatch projection operator provides another way to alter the returned document to contain only the first matched shapes element:
db.test.find(
{"shapes.color": "red"},
{_id: 0, shapes: {$elemMatch: {color: "red"}}});
Returns:
{"shapes" : [{"...
Asynchronous Requests with Python requests
I tried the sample provided within the documentation of the requests library for python.
12 Answers
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How to create enum like type in TypeScript?
...
Just another note that you can a id/string enum with the following:
class EnumyObjects{
public static BOUNCE={str:"Bounce",id:1};
public static DROP={str:"Drop",id:2};
public static FALL={str:"Fall",id:3};
}
...
How to detect UI thread on Android?
Is there a robust way to detect if Thread.currentThread() is the Android system UI thread in an application?
I would like to put some asserts in my model code that asserts that only one thread ( eg the ui thread) accesses my state, to assure that no kind of synchronization is necessary.
...
Get contentEditable caret index position
...pis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="contentbox" contenteditable="true">Click me and move cursor with keys or mouse</div>
<div id="caretposition">0</div>
<script>
var update = function() {
$('#caretposition').html(getCare...
What is aria-label and how should I use it?
...element:
<label for="fmUserName">Your name</label>
<input id="fmUserName">
The <label> explicitly tells the user to type their name into the input box where id="fmUserName".
aria-label does much the same thing, but it's for those cases where it isn't practical or desirab...