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Reference: Comparing PHP's print and echo
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Why two constructs?
The truth about print and echo is that while they appear to users as two distinct constructs, they are both really shades of echo if you get down to basics, i.e. look at the internal source code. That sourc...
What would cause an algorithm to have O(log log n) complexity?
...ome of the factors that might cause an algorithm to have O(log n) complexity.
2 Answers
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Is multiplication and division using shift operators in C actually faster?
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Short answer: Not likely.
Long answer:
Your compiler has an optimizer in it that knows how to multiply as quickly as your target processor architecture is capable. Your best bet is to tell the compiler your intent clearly (i.e. i*2 rather than i ...
How is Docker different from a virtual machine?
I keep rereading the Docker documentation to try to understand the difference between Docker and a full VM. How does it manage to provide a full filesystem, isolated networking environment, etc. without being as heavy?
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How to fix Git error: object file is empty?
When I try to commit changes, I get this error:
24 Answers
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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网
...rdboard 的 MITVRHelper 应用程序
支持 Expeditions：PanoramaActivity.java
支持 Virtuality：VirtualActivity.java
结论：下一步
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使用虚拟现实和App Inventor进行实验
该项目是麻省理工学院 App Inventor 2011 年 Google Summer of Code 活动的一...
What do Clustered and Non clustered index actually mean?
I have a limited exposure to DB and have only used DB as an application programmer. I want to know about Clustered and Non clustered indexes .
I googled and what I found was :
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Algorithm to generate a crossword
Given a list of words, how would you go about arranging them into a crossword grid?
13 Answers
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How to deal with SettingWithCopyWarning in Pandas?
I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this:
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What's “P=NP?”, and why is it such a famous question? [closed]
...rhaps the most famous in all of Computer Science. What does it mean? And why is it so interesting?
6 Answers
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