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How to create the most compact mapping n → isprime(n) up to a limit N?
Naturally, for bool isprime(number) there would be a data structure I could query.
I define the best algorithm , to be the algorithm that produces a data structure with lowest memory consumption for the range (1, N], where N is a constant.
Just an example of what I am looking for: I could rep...
Pass arguments to Constructor in VBA
How can you construct objects passing arguments directly to your own classes?
6 Answers
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Difference between array_map, array_walk and array_filter
What exactly is the difference between array_map , array_walk and array_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them.
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Determine a string's encoding in C#
Is there any way to determine a string's encoding in C#?
9 Answers
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使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...定功能的支持，例如传感器的温度读数。 BLE 组件与 WICED Sense 设备和 Arduino 101 板上的传感器实时交互。 这种整体设计使得即使没有任何编程经验的人也能够创建自己的移动应用程序，这些应用程序可以与不断变化的物联网设备...
To underscore or to not to underscore, that is the question
Are there any problems with not prefixing private fields with an underscore in C# if the binary version is going to be consumed by other framework languages? For example since C# is case-sensitive you can call a field "foo" and the public property "Foo" and it works fine.
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Why use apparently meaningless do-while and if-else statements in macros?
In many C/C++ macros I'm seeing the code of the macro wrapped in what seems like a meaningless do while loop. Here are examples.
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How to parse the AndroidManifest.xml file inside an .apk package
This file appears to be in a binary XML format. What is this format and how can it be parsed programmatically (as opposed to using the aapt dump tool in the SDK)?
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What is the (best) way to manage permissions for Docker shared volumes?
I've been playing around with Docker for a while and keep on finding the same issue when dealing with persistent data.
13 A...