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round() for float in C++
I need a simple floating point rounding function, thus:
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Algorithm to generate all possible permutations of a list?
Say I have a list of n elements, I know there are n! possible ways to order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, b, c]. The algorithm would return [[a, b, c], [a, c, b,], [b, a, c], [b, c, a], [c, a, b], [c, b, a]].
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Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
What is the convention for suffixing method names with "Async"?
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Why does !{}[true] evaluate to true in JavaScript?
{}[true] is [true] and ![true] should be false .
10 Answers
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OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...，libeasy可以有多个网络I O线程，每个网络I O线程一个event loop，事件驱动模型基于开源的libev实现。我认为，libeasy不同于 libeasy是个网络框架，这个网络框架基于事件驱动模型，libeasy可以有多个网络I/O线程，每个网络I/O线程一...
Package objects
What are package objects, not so much the concept but their usage?
4 Answers
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How do I serialize an object and save it to a file in Android?
Say I have some simple class and once it's instantiated as an object I want to be able to serialize its contents to a file, and retrieve it by loading that file at some later time... I'm not sure where to start here, what do I need to do to serialize this object to a file?
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Is the C# static constructor thread safe?
In other words, is this Singleton implementation thread safe:
10 Answers
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Better techniques for trimming leading zeros in SQL Server?
I've been using this for some time:
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Is there a way to dump a stack trace without throwing an exception in java?
I am thinking of creating a debug tool for my Java application.
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