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Understanding how recursive functions work
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I'm not too happy with thinking of it as a copy. I find that a more intuitive explanation is to differentiate the function itself (the code,...
Query EC2 tags from within instance
Amazon recently added the wonderful feature of tagging EC2 instances with key-value pairs to make management of large numbers of VMs a bit easier.
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Logical operators (“and”, “or”) in DOS batch
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12 Answers
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how to return index of a sorted list? [duplicate]
...the sorted items in the list. For example, if the list I want to sort is [2,3,1,4,5] , I need [2,0,1,3,4] to be returned.
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Showing the same file in both columns of a Sublime Text window
When I have 2 columns set in a Sublime Text window, can I display the same file in both columns?
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What's the difference between a proc and a lambda in Ruby?
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One difference is in the way they handle arguments. Creating a proc using proc {} and Proc.new...
Go > operators
...sibly over) simplified definition is just that << is used for "times 2" and >> is for "divided by 2" - and the number after it is how many times.
So n << x is "n times 2, x times". And y >> z is "y divided by 2, z times".
For example, 1 << 5 is "1 times 2, 5 times" or...
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App Inventor 2 实现导出Excel全方案总结 · App Inventor 2 中文网
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【持续更新】App Inventor 2 中文拓展一览ai2_extensions本文档描述您在使用App Inventor 2构建应用程序时所能用到的拓展，以打造界面更加酷炫、功能更加强大的App。更多拓展请移步至《原版最全拓展一览》。【实用小技巧】从 aia项目...