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Calculate the number of items PHP


Calculate the number of items PHP

By : Charlie Snyder
Date : November 17 2020, 11:58 AM
Hope this helps For some reason I want to use a for loop, not a foreach, so how do I can get the length of $item? count() doesn't work for me. , You want to use ->lenth, you should do this
code :
var_dump($x->length);


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jQuery calculate number of list items, then multiply that by number and set as width

jQuery calculate number of list items, then multiply that by number and set as width


By : user2380123
Date : March 29 2020, 07:55 AM
wish of those help .length is a property not a method, so just use $("ul.sections li").length like this:
code :
$('ul.sections').width($("ul.sections li").length * $("ul.sections").width());
$('ul.sections').width(function(i, w) { return $(this).find('li').length * w; });
MySQL calculate number of items FROM an INNER relationship

MySQL calculate number of items FROM an INNER relationship


By : Aditi Patil
Date : March 29 2020, 07:55 AM
I wish this helpful for you When you have a LEFT JOIN, you shouldn't use a column in the child table in the GROUP BY. This is because columns from that table will all be NULL when there are no matches for the row in the master table, and it will group all those unmatched rows together. So you should GROUP BY cn.id rather than GROUP BY lc.collection_id.
And instead of the correlated subquery, you can join with a subquery that calculates the number of items grouped by collection ID.
code :
SELECT  cn.id,
        cn.name,
        cn.description,
        u.avatar,
        u.username,
        COUNT(lc.id) as n_likes,
        n_items
FROM collection_names as cn 
INNER JOIN users as u ON u.ID=cn.user_id 
LEFT JOIN likes_collections as lc ON lc.collection_id=cn.id
LEFT JOIN (SELECT collection_id, COUNT(*) AS n_items
           FROM collection_items
           GROUP BY collection_id) AS ci ON ci.collection_id = cn.id
WHERE cn.public=1
GROUP BY cn.id
ORDER BY cn.published_date DESC
LIMIT 0, 5
how to calculate the number of items per page and their index using javascript?

how to calculate the number of items per page and their index using javascript?


By : Paul Bahushevich
Date : March 29 2020, 07:55 AM
it helps some times You could use Math.min.
code :
var end = Math.min(start + numberOfItemsPerPage - 1, totalItemsCount);
var totalItemsCount = 14;
var numberOfItemsPerPage = 5;
var page = 3;

var numberOfPages = Math.floor((totalItemsCount + numberOfItemsPerPage - 1) / numberOfItemsPerPage);
var start = (page * numberOfItemsPerPage) - (numberOfItemsPerPage - 1);
var end = Math.min(start + numberOfItemsPerPage - 1, totalItemsCount);

console.log(`${start} to ${end} of ${totalItemsCount}`);
Calculate number of items per row based on their width in SwiftUI

Calculate number of items per row based on their width in SwiftUI


By : user3113886
Date : March 29 2020, 07:55 AM
Does that help TL;DR
GeometryReader may be a "hacky" solution, but it is the solution we have at the moment. It is possible to create a solution that reflows a small number of items dynamically, or a large number of items with a delay. My demo code would be unwieldy here, but it sounds like describing my approach may be useful.
code :
+---------- FIRST TRY - CYCLIC ----------+  +-------- SECOND TRY - ACYCLIC --------+
|                                        |  |                                      |
|    +--------+ [String] +----------+    |  |   +-------+ [String] +--------+      |
|    |                              |    |  |   |                           |      |
|    | +--------------------------+ |    |  |   v                           v      |
|    | |                          | |    |  | Hidden +-->  Widths  +--> [[String]] |
|    v v                          + v    |  | layout                        |      |
|  Display +-->  Widths  +--> [[String]] |  |                               v      |
|  layout                                |  |                            Display   |
|                                        |  |                            layout    |
+----------------------------------------+  +--------------------------------------+
Algorithm to calculate the optimum number of items to fetch

Algorithm to calculate the optimum number of items to fetch


By : wayne
Date : March 29 2020, 07:55 AM
Hope that helps Is there a compelling reason to not over-request?
abc.com?page=2&per_page=1024
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