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Is memcached a dinosaur in comparison to Redis? [closed]
...hout help from the client. Also memcached is faster with big values in the order of 100k. Redis recently improved a lot about big values (unstable branch) but still memcached is faster in this use case. The point here is: nor one or the other will likely going to be your bottleneck for the query-per...
“Find next” in Vim
...ll often find yourself using :noh. This is so common that a mapping is in order:
nmap <leader>z :noh<CR>
I easily remember this one as z since I used to constantly type /zz<CR> (which is a fast-to-type uncommon occurrence) to clear my highlighting. But the :noh mapping is way be...
composer: How to find the exact version of a package?
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php composer.phar show -a and php composer.phar show package/name are also both helpful.
– bishop
Aug 26 '14 at 1:04
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Send email with PHPMailer - embed image in body
I'm trying to send HTML mail, with PHPMailer, with images.
The body is loaded from a html file, that contains all the info.
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How to run test methods in specific order in JUnit4?
I want to execute test methods which are annotated by @Test in specific order.
18 Answers
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Select first row in each GROUP BY group?
...OW_NUMBER() OVER(PARTITION BY p.customer
ORDER BY p.total DESC) AS rk
FROM PURCHASES p)
SELECT s.*
FROM summary s
WHERE s.rk = 1
Supported by any database:
But you need to add logic to break ties:
SELECT MIN(x.id), -- change to MAX if you want the hi...
Android Studio says “cannot resolve symbol” but project compiles
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Try changing the order of dependencies in File > Project Structure > (select your project) > Dependencies.
Invalidate Caches didn't work for me, but moving my build from the bottom of the list to the top did.
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mysql -> insert into tbl (select from another table) and some default values [duplicate]
... you can do something like this:
INSERT INTO course_payment
SELECT NULL, order_id, payment_gateway, total_amt, charge_amt, refund_amt, NOW()
FROM orders ORDER BY order_id DESC LIMIT 10;
share
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i...
How do I migrate a model out of one django app and into a new one?
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In order to access orm['contenttypes.contenttype'], you also need to add the --freeze contenttypes option to your schemamigration commands.
– Gary
Dec 5 '13 at 18:21
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What is the difference between onBlur and onChange attribute in HTML?
...hat field's value changes. These events will not always occur in the same order, however.
In Firefox, tabbing out of a changed field will fire onchange then onblur, and it will normally do the same in IE. However, if you press the enter key instead of tab, in Firefox it will fire onblur then onch...