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App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...阅设备的数量，以及消息的发送历史：
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How to change the default charset of a MySQL table?
...t),
' COLLATE ',
QUOTE(collation),
';'
));
CALL `exec_query`(CONCAT('REPAIR TABLE `', tab_name, '`;'));
CALL `exec_query`(CONCAT('OPTIMIZE TABLE `', tab_name, '`;'));
END LOOP `change_loop`;
CLOSE `charset_cursor`;
SET foreign_key_checks = 1;
END$$
DELIMITER ;
You can place this code inside...
How do I protect Python code? [closed]
...expensive. Make your product slightly less expensive.
Offer upgrades and enhancements that make any reverse engineering a bad idea. When the next release breaks their reverse engineering, there's no point. This can be carried to absurd extremes, but you should offer new features that make the ne...
Using javadoc for Python documentation [closed]
...
The standard for python documentation strings is described in Python Enhancement Proposal 257.
The appropriate comment for your method would be something like
def format(...):
"""Return timestamp string with place holders replaced with values.
Keyword arguments:
timestamp --...
How do I replace NA values with zeros in an R dataframe?
... 3
10 4 2 2 5 0 9 7 2 5 5
There's no need to apply apply. =)
EDIT
You should also take a look at norm package. It has a lot of nice features for missing data analysis. =)
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impr...
PHP-FPM doesn't write to error log
...cording to FastCGI specs.
; Default Value: no
catch_workers_output = yes
Edit:
The file to edit is the file that configure your desired pool.
By default its: /etc/php-fpm.d/www.conf
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impro...
Algorithm for creating a school timetable
...hat it'll be better to start developing with simple set of conditions, and enhancing it as correct answer for them is obtained.
– cand
Feb 2 '10 at 11:00
1
...
MySQL error 1449: The user specified as a definer does not exist
... incompatibility, it is checked. If any problems are found,
the table is repaired. mysql_upgrade also upgrades the system tables
so that you can take advantage of new privileges or capabilities that
might have been added.
...
Detect Android phone via Javascript / jQuery
...t, while you can use media queries? JS device detection should be only for enhancement, like adding an invitation to install your app. The page rendering never should rely on it because you will have performance issues and a horrible usability experience.
– camilokawerin
...
Understanding Apache's access log
... details. Mobile/7B405: This is used by the
browser to indicate specific enhancements that are available directly
in the browser or through third parties. An example of this is
Microsoft Live Meeting which registers an extension so that the Live
Meeting service knows if the software is alrea...