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MySQL Workbench: How to keep the connection alive
...g in all version of MySQL Workbench beyond 6.0.x on Mac OS : stackoverflow.com/a/37890150/1014813
– lepix
Jun 17 '16 at 20:48
7
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低效程序员的7个坏习惯 - 创意 - 清泛网 - 专注C/C++及内核技术
...？你是不是其中之一呢？
译文链接：http://www.codeceo.com/article/7-bad-habits-ineffective-programmer.html
英文原文：7 bad habits of highly ineffective software engineers
翻译作者：码农网– 小峰 低效 坏习惯
I get exception when using Thread.sleep(x) or wait()
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You have a lot of reading ahead of you. From compiler errors through exception handling, threading and thread interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} catch(InterruptedException ex...
Where is android studio building my .apk file?
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Lists: Count vs Count() [duplicate]
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from a maintenance perspective, I'd recommend using Count() in case your type changes from a List to some other IEnumerable that doesn't have a Count property.
– DLeh
Dec 10 '15 at 18:30
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SQL command to display history of queries
I would like to display my executed sql command history in my MYSQL Query Browser. What is the sql statement for displaying history?
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What is the command to list the available avdnames
...er is almost six years old, and while still technically valid, the android command has been deprecated in favor of dkmanager (and avdmanager).
– Bill Hileman
Jun 20 '17 at 15:04
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Rails: select unique values from a column
... Model objects. Not plain ratings. And from uniq's point of view, they are completely different. You can use this:
Model.select(:rating).map(&:rating).uniq
or this (most efficient)
Model.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
Update
Apparently, as of rails 5.0.0.1, ...
Uniq by object attribute in Ruby
...bo for Ruby 1.8 you need to read just below in this same SO: stackoverflow.com/a/113770/213191
– Peter H. Boling
Jul 20 '16 at 3:27
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