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git switch branch without discarding local changes
Alright, lets say one day we make happen to make a bunch of modifications and when we go to commit them we notice we were working on the wrong branch.
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What is a “cache-friendly” code?
What is the difference between " cache unfriendly code " and the " cache friendly " code?
9 Answers
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log4j configuration via JVM argument(s)?
What variables do I have to set/pass as arguments to the JVM to get log4j to run properly? And by properly I mean not complain and print to the console. Can I see a typical example?
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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...推出用户密码，Hash结果一致就证明原文一致，我们来用Ruby代码试一下上面的第二点 （MD5是一种常用的Hash算法)
2.2.3 :003 > require 'digest/md5.so'
=> true
2.2.3 :004 > puts Digest::MD5.hexdigest('I love you')
e4f58a805a6e1fd0f6bef58c86f9ceb3
=> nil
2.2.3 ...
How do I change the background color of a plot made with ggplot2
By default, ggplot2 produces plots with a grey background. How do I change the color of the background of the plot?
3 Answ...
Why does Date.parse give incorrect results?
Fri Jul 08 2005 00:00:00 GMT-0700 (PST)
11 Answers
11
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Run a string as a command within a Bash script
I have a Bash script that builds a string to run as a command
8 Answers
8
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Import CSV to SQLite
I'm trying to import a csv file to an SQLite table.
10 Answers
10
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How can I access “static” class variables within class methods in Python?
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Instead of bar use self.bar or Foo.bar. Assigning to Foo.bar will create a static variable, and assigning to self.bar will create an instance variable.
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Rails ActiveRecord date between
...ou should do this instead:
Comment.where(:created_at => @selected_date.beginning_of_day..@selected_date.end_of_day)
Or, if you want to or have to use pure string conditions, you can do:
Comment.where('created_at BETWEEN ? AND ?', @selected_date.beginning_of_day, @selected_date.end_of_day)
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