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ActiveRecord: List columns in table from console
...del name:
> User
gives:
User(id: integer, name: string, email: string, etc...)
In rails four, you need to establish a connection first:
irb(main):001:0> User
=> User (call 'User.connection' to establish a connection)
irb(main):002:0> User.connection; nil #call nil to stop repl spitti...
how to stop browser back button using javascript
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I created a .js file as recommended and included the js file in my code using the following: <script src="./javascript/noback.js"></script> But I can still perform a back (using Safari). What am I missing? This library was ad...
grid controls for ASP.NET MVC? [closed]
... and have had some good luck with it. Lots of options for inline editing, etc. If that stuff isn't necessary, then we've just used a plain foreach loop like @Hrvoje.
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Foreign key constraint may cause cycles or multiple cascade paths?
...ebug) the implementation and endure their disadvantages (worse performance etc).
– onedaywhen
Feb 22 '16 at 15:14
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How do you show animated GIFs on a Windows Form (c#)
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It's not too hard.
Drop a picturebox onto your form.
Add the .gif file as the image in the picturebox
Show the picturebox when you are loading.
Things to take into consideration:
Disabling the picturebox will prevent the gif from being animated.
Animated gifs:
If you are looking for anim...
Cross cutting concern example
...se I may want to log in the presentation layer, business layer, data layer etc.
– CodingYoshi
May 14 '18 at 1:52
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How can I see the raw SQL queries Django is running?
... can find your postgresql.conf by running psql -U postgres -c 'SHOW config_file'
– kramer65
Oct 1 '19 at 7:23
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Understanding the Event Loop
...ork connection with data ready to read?" or "Hey OS, any of my outstanding filesystem calls have data ready?". Based upon its internal algorithm and event loop engine design, node will select one "tick" of JavaScript to execute, run it, then repeat the process all over again. That's what is meant by...
How to paste in a new line with vim?
...o any key, including p itself: :nmap p :pu<CR> Put it in your .vimrc file and off you go :)
– Capi Etheriel
Mar 12 '12 at 14:17
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初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...wn -R mysql data
shell> bin/mysqld_safe --user=mysql &
shell> cp support-files/mysql.server /etc/init.d/mysql.server
MySQL安装完毕后，在插件目录我们能看到innodb_engine.so和libmemcached.so：
mysql> SELECT @@plugin_dir;
+------------------------------+
| @@plugin_dir ...