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class

What does class << self do in Ruby ? 6 Answers 6 ...
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Plotting two variables as lines using ggplot2 on the same graph

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Difference between dict.clear() and assigning {} in Python

In python, is there a difference between calling clear() and assigning {} to a dictionary? If yes, what is it? Example: ...
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How to export all data from table to an insertable sql format?

I have a Table (call it A_table ) in a database (call it A_db ) in Microsoft SQL Server Management Studio, and there are 10 rows. ...
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Are the shift operators () arithmetic or logical in C?

In C, are the shift operators ( << , >> ) arithmetic or logical? 11 Answers ...
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What are important languages to learn to understand different approaches and concepts? [closed]

When all you have is a pair of bolt cutters and a bottle of vodka, everything looks like the lock on the door of Wolf Blitzer's boathouse. (Replace that with a hammer and a nail if you don't read xkcd) ...
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Why is there no Char.Empty like String.Empty?

Is there a reason for this? I am asking because if you needed to use lots of empty chars then you get into the same situation as you would when you use lots of empty strings. ...
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为什么说自媒体到了最危险的时期? - 资讯 - 清泛网 - 专注C/C++及内核技术

...。但并不妨碍他们指点江山,激昂文字,于是类似《90后CEO要颠覆未来,让马云哭晕在厕所里》等胡说八道的文字开始大行其道。现在不是内容太多了,而是好内容太少了。 由于科技自媒体行业的虚火旺盛,创业公司对于品牌...
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What does |= (ior) do in Python?

Google won't let me search |= so I'm having trouble finding relevant documentation. Anybody know? 8 Answers ...
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Key hash for Android-Facebook app

I'm working on an Android app, in which I want to integrate a Facebook posting feature. I downloaded the Facebook-Android SDK, and I got the readme.md (text file) in there, in which it is mentioned to generate the key hash for Android. How do I generate it? ...