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Difference between DateTime and Time in Ruby
...ical reasons, but new code does not necessarily need to be concerned. Picking one for consistency is probably best, so try and mesh with what your libraries expect. For example, ActiveRecord prefers DateTime.
In versions prior to Ruby 1.9 and on many systems Time is represented as a 32-bit signed v...
Java Swing revalidate() vs repaint()
I'm putting together a Swing application where I often want to replace the contents of a JPanel. To do this, I'm calling removeAll() , then adding my new content, then calling revalidate() .
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How to convert .crt to .pem [duplicate]
...p mycert.crt mycert.pem. Since the default -inform is PEM, this is just doing an in->out conversion from PEM to PEM. The main different might be in potential text headers around the actual cert. Most of the time .crt are in PEM format anyway, but sometimes they're in DER format (the conventions a...
How to handle $resource service errors in AngularJS
I am making requests to my API and I am using AngularJS $resource module. It's different from $http so I don't know how to handle my errors.
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Angularjs code/naming conventions [closed]
Does anyone know if exists any official or most accepted reference for Angular naming conventions to use when we build our applications?
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Should I be using Protractor or Karma for my end-to-end testing? [closed]
Should I be using Protractor or Karma for my end-to-end testing?
1 Answer
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vim 命令与快捷键 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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定位命令
:set nu
:set nonu
gg:到第一行
G:到最后一行
nG:到第n行
:n：到第n行
删除命令
x:删除光标所在处的字符
nx:删除光标所在处后的n个字符
dd:删除光标所在行
ndd:删除第n行字符
gG:删除光标所在到文章底部的内容
D:...
Is jQuery “each()” function synchronous?
consider this scenario for validating:
9 Answers
9
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lsof survival guide [closed]
...werful command-line utility for unix systems. It lists open files, displaying information about them. And since most everything is a file on unix systems, lsof can give sysadmins a ton of useful diagnostic data.
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How do I use CREATE OR REPLACE?
Am I correct in understanding that CREATE OR REPLACE basically means "if the object exists, drop it, then create it either way?"
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