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Python append() vs. + operator on lists, why do these give different results?

...quences) by concatenating the element. The append-method however does literally what you ask: append the object on the right-hand side that you give it (the array or any other object), instead of taking its elements. An alternative Use extend() if you want to use a function that acts similar to the ...
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Facebook Post Link Image

When someone posts a link on facebook, a script usually scans that link for any images, and displays a quick thumbnail next to the post. For certain URLs though (including mine), FB doesn't seem to pick up anything, despite their being a number of images on that page. ...
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Limit file format when using ?

...tioned here, but is not the default in the dropdown. The default filter is All files (*).] You can also use asterisks in MIME-types. For example: <input type="file" accept="image/*" /> <!-- all image types --> <input type="file" accept="audio/*" /> <!-- all audio types --&g...
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error_log per Virtual Host?

... Depending on your config, you may need to manually create the log file and set the owner/group to the same user/group that Apache is using. Apache won't warn you if it can't write to the log file. – Ian Dunn Jun 24 '11 at 23:41 ...
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Convert pem key to ssh-rsa format

...m assuming no password for the keys (which is bad). Generate an RSA pair All the following methods give an RSA key pair in the same format With openssl (man genrsa) openssl genrsa -out dummy-genrsa.pem 2048 In OpenSSL v1.0.1 genrsa is superseded by genpkey so this is the new way to do it (man...
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Count Rows in Doctrine QueryBuilder

... He accepted your answer so I guess all is well. I was under the impression that he only wanted a count without the overhead of actually retrieving the rows which my example shows. There is of course no reason why where conditions could not be added. ...
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Disabling Strict Standards in PHP 5.4

...to this I was running my site on 5.3.8. Unfortunately, php 5.4 combines E_ALL and E_STRICT , which means that my previous setting for error_reporting does not work now. My previous value was E_ALL & ~E_NOTICE & ~E_STRICT Should I just enable values one at a time? ...
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How do I pass variables and data from PHP to JavaScript?

... There are actually several approaches to do this. Some require more overhead than others, and some are considered better than others. In no particular order: Use AJAX to get the data you need from the server. Echo the data into the page...
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HTML input - name vs. id [duplicate]

... is the difference between the use of the name and id attributes especially that I found that they are sometimes named the same? ...
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nginx error connect to php5-fpm.sock failed (13: Permission denied)

...or /etc/php/7.0/fpm/pool.d/www.conf, depending on your version. Uncomment all permission lines, like: listen.owner = www-data listen.group = www-data listen.mode = 0660 Restart fpm - sudo service php5-fpm restart or sudo service php7.0-fpm restart Note: if your webserver runs as user other than...