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jQuery Set Select Index
...1+
$('#selectBox :nth-child(4)').prop('selected', true); // To select via index
$('#selectBox option:eq(3)').prop('selected', true); // To select via value
Thanks for the comment, .get won't work since it returns a DOM element, not a jQuery one. Keep in mind the .eq function can be used outsid...
Python + Django page redirect
...direct (e.g. cflocation in ColdFusion, or header(location:http://) for PHP) in Django?
10 Answers
...
Converting String to Int with Swift
...ed to check if the collection is not empty.
text!.remove(at: text!.index(before: text!.endIndex))
// sends an editingChanged action to force the textfield to be updated
sendActions(for: .editingChanged)
}
@objc func editingChanged() {
guard value <= maxValu...
Any implementation of Ordered Set in Java?
... There is no function in LinkedHashSet that allows you to figure out which index the element is in as well.
– searchengine27
May 5 '17 at 1:06
...
How to use Python's pip to download and keep the zipped files for a package?
...IRC, I had to use sudo pip install <path-to-downloaded-package> --no-index --find-links `pwd`
– knocte
Nov 30 '16 at 9:09
...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...e stored in 1 or 2 bytes. However: "When sending a key to the handler for index_read() or records_in_range, we always use a 2-byte length for the VARCHAR to make things simpler." See forge.mysql.com/wiki/MySQL_Internals_MyISAM
– Bill Karwin
Feb 12 '11 at 18:5...
Best way to randomize an array with .NET
...ursive step) shuffle the first n-1 elements of the array
choose a random index, x, in the range [0..n-1]
swap the element at index n-1 with the element at index x
The iterative equivalent is to walk an iterator through the array, swapping with random elements as you go along, but notice tha...
Is there a `pointer-events:hoverOnly` or similar in CSS?
...I've done it:
HTML
<div
id="toplayer"
class="layer"
style="
z-index: 20;
pointer-events: none;
background-color: white;
display: none;
"
>
Top layer
</div>
<div id="bottomlayer" class="layer" style="z-index: 10">Bottom layer</div>
CSS (unchanged)
.l...
Index on multiple columns in Ruby on Rails
...
The order does matter in indexing.
Put the most selective field first, i.e. the field that narrows down the number of rows fastest.
The index will only be used insofar as you use its columns in sequence starting at the beginning. i.e. if you index ...
mysql实现split分割字符串（length, SUBSTRING_INDEX, substring） - 数据...
mysql实现split分割字符串（length, SUBSTRING_INDEX, substring）由于MySql没有直接的split函数，只提供了length, SUBSTRING_INDEX, substring三个函数，这里介绍如何用这三个函数实现split功能。# SUBS...由于MySql没有直接的split函数，只提供了length, SUB...