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Combine two ActiveRecord::Relation objects
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207
If you want to combine using AND (intersection), use merge:
first_name_relation.merge(last_na...
LINQ equivalent of foreach for IEnumerable
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22 Answers
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What format string do I use for milliseconds in date strings on iPhone?
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211
It's SSS, per the Unicode Locale Data Markup Language spec.
"yyyy-MM-dd'T'HH:mm:ss.SSS"
Mor...
How should you build your database from source control?
...s shouldn't be version controlled?
Sequences?
Grants?
User Accounts?
see 2. If your users/roles (or technical user names) are different between environments, you can still script them using templates (see 1.)
How should database objects be organized in your SCM repository?
How do you deal with ...
Updating packages in Emacs
...igher precedence is at the beginning or end of the list.
Update: In Emacs 25, there is a variable package-archive-priorities that you can use to prioritize your package repos (e.g. prefer ELPA over MELPA).
Here is the relevant section of my init.el, if you're interested:
(setq jpk-packages
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...of memory: Kill process 信息：
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Out of memory: Kill process 9682 (mysqld) score 9 or sacrifice child
Killed process 9682, UID 27, (mysqld) total-vm:47388kB, anon-rss:3744kB, file-rss:80kB
httpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0
httpd cpuset=/...
Detect if homebrew package is installed
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answered Dec 27 '13 at 14:31
Holger JustHolger Just
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Date.getDay() javascript returns wrong day
... integer corresponding to the day of the week: 0 for Sunday, 1 for Monday, 2 for Tuesday, and so on.
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JavaScript code to stop form submission
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12 Answers
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