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MareshaAES 拓展：AES加解密算法 - App Inventor 2 拓展 - 清泛IT社区，为创新赋能！
文档：Generate Salt , retrunType : String
Encrypt arbitrary string via AES , returnType : String
Decrypt Encrypted string via AES , returnType : String
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参考：https://community.appinventor.mi ... crypt-decrypt/63415
MySQL skip first 10 results
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more easy to understand than limit 10,10
– shellbye
May 5 '16 at 6:11
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How do I use Ruby for shell scripting?
....basename('dir/file.txt') #=> 'file.txt'
File.join('a', 'bunch', 'of', 'strings') #=> 'a/bunch/of/strings'
__FILE__ #=> the name of the current file
Also useful from the stdlib is FileUtils
require 'fileutils' #I know, no underscore is not ruby-like
include FileUtils
# Gives you access ...
INSERT INTO … SELECT FROM … ON DUPLICATE KEY UPDATE
... before the equals references the columns named in the INSERT INTO clause, and the second part references the SELECT columns.
INSERT INTO lee(exp_id, created_by, location, animal, starttime, endtime, entct,
inact, inadur, inadist,
smlct, smldur, smldist,
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...blem is to put a blank space before the conversion specifier in the format string:
scanf(" %c", &c);
The blank in the format string tells scanf to skip leading whitespace, and the first non-whitespace character will be read with the %c conversion specifier.
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jQuery: click function exclude children.
Trying to wrap my head around the jQuery ".not()" function, and running into a problem. I would like to have the parent div to be "clickable" but if a user clicks on a child element, the script is not called.
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Change the image source on rollover using jQuery
I have a few images and their rollover images. Using jQuery, I want to show/hide the rollover image when the onmousemove/onmouseout event happen. All my image names follow the same pattern, like this:
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jQuery duplicate DIV into another DIV
Need some jquery help copying a DIV into another DIV and hoping that this is possible. I have the following HTML:
5 Answers...
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...m You complicate matters with the ::timestamptz. With that you convert the string to TIMESTAMP WITH TIME ZONE, and when that will be further converted to WITHOUT TIME ZONE, that will store the "wall calendar" day and wall clock time of that instant as seen from your session time zone (which is maybe...
How to change a nullable column to not nullable in a Rails migration?
...lse, <put a default value here> )
# change_column(:users, :admin, :string, :default => "")
end
Changing a column with NULL values in it to not allow NULL will cause problems. This is exactly the type of code that will work fine in your development setup and then crash when you try to d...