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Why does MYSQL higher LIMIT offset slow the query down?
...ecords. It needs to check and count each record on its way.
Assuming that id is a PRIMARY KEY of a MyISAM table, you can speed it up by using this trick:
SELECT t.*
FROM (
SELECT id
FROM mytable
ORDER BY
id
LIMIT 10000, 30
) q
JOIN ...
How to replace innerHTML of a div using jQuery?
...nstead of the existing content: Then just reset the content and append the new.
var itemtoReplaceContentOf = $('#regTitle');
itemtoReplaceContentOf.html('');
newcontent.appendTo(itemtoReplaceContentOf);
Or:
$('#regTitle').empty().append(newcontent);
...
How can I count text lines inside an DOM element? Can I?
I'm wondering if there's a way to count lines inside a div for example. Say we have a div like so:
16 Answers
...
How to use setArguments() and getArguments() methods in Fragments?
... in oncreate() method. It will call only when the fragment is destroyed or newly created time.
– Mohamed Ibrahim
Jan 29 '16 at 3:54
...
LINQ Join with Multiple Conditions in On Clause
...
You just need to name the anonymous property the same on both sides
on new { t1.ProjectID, SecondProperty = true } equals
new { t2.ProjectID, SecondProperty = t2.Completed } into j1
Based on the comments of @svick, here is another implementation that might make more sense:
from t1 in Proj...
How can one see the structure of a table in SQLite? [duplicate]
... PHP you can get it this way:
<?php
$dbname = 'base.db';
$db = new SQLite3($dbname);
$sturturequery = $db->query("SELECT sql FROM sqlite_master WHERE name='foo'");
$table = $sturturequery->fetchArray();
echo '<pre>' . $table['sql'] . '</pre>';
$db->...
Performance of foreach, array_map with lambda and array_map with static function
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f18144782%2fperformance-of-foreach-array-map-with-lambda-and-array-map-with-static-function%23new-answer', 'question_page');
}
...
Creating a constant Dictionary in C#
...Dictionary<,> quite easily:
Dictionary<string, int> ids = new Dictionary<string, int> {
{"abc",1}, {"def",2}, {"ghi",3}
};
ILookup<string, int> lookup = ids.ToLookup(x => x.Key, x => x.Value);
int i = lookup["def"].Single();
...
Best way to add “current” class to nav in Rails 3
...lected' : nil) %> Really neat that it works for both /users and /users/new.
– Andreas
Feb 8 '14 at 23:42
...
How to find the operating system version using JavaScript?
...le. Feel free to use and extend.
Breaking Change:
Since September 2020 the new Edge gets detected. So 'Microsoft Edge' is the new version based on Chromium and the old Edge is now detected as 'Microsoft Legacy Edge'!
/**
* JavaScript Client Detection
* (C) viazenetti GmbH (Christian Ludwig)
*/
(f...