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企业级负载平衡简介 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...系统中的某个服务器实例失效，那么哈希算法中的哈希值空间将发生变化，进而导致原本的服务实例分配结果将不再有效。在这种情况下，所有的请求将重新分配服务器实例。另外，在某些情况下，用户的IP也可能在各个请求之...
地图组件（高德地图） · App Inventor 2 中文网
...图块提供商以及地图的经纬度。
例如，为了节省存储空间，海洋区域的缩放级别比人口稠密的城市中心区域的缩放级别更受限，因此海洋区域的缩放级别有效值可能是 1-7，城市区域的缩放级别有效值可能是 1-20。
如果缩...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，则此时可使用reserve。第二种方式是，先预留足够大的空间，然后，当把所有的数据都加入后，再去除多余的容量。
第15条：注意string实现的多样性。
如果你想有效的使用STL，那么你需要知道string实现的多样性，尤其是当...
计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...AX_VAR;
double _ave;
//double _var;
double _sam_stdev;
double _all_stdev;
double _sum;
double _sum_2;
int _count;
double _min_v;
double _max_v;
StdevInfo()
: _ave(0.0)
//, _var(MAX_VAR)
, _sam_stdev(sqrt(MAX_VAR))
, _all_stdev(0.0)
, _sum(0.0)
...
How do you log all events fired by an element in jQuery?
I'd like to see all the events fired by an input field as a user interacts with it. This includes stuff like:
12 Answers
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How to initialize all members of an array to the same value?
... array in C (not C++ if that makes a difference). I want to initialize all members of the same value.
23 Answers
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What is the most efficient/elegant way to parse a flat table into a tree?
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Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support recursive queries in standard syntax.
WITH RECURSIVE MyTree AS (
SELECT * FROM MyTable WHERE ParentId IS NULL
UNION ALL
SELECT m.* FROM MyTABLE AS m JOIN MyTree AS t ON m.ParentI...
How do I write good/correct package __init__.py files
...
__all__ is very good - it helps guide import statements without automatically importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is nee...
A simple explanation of Naive Bayes Classification
... & part two being the confusion surrounding Training set.
In general all of Machine Learning Algorithms need to be trained for supervised learning tasks like classification, prediction etc. or for unsupervised learning tasks like clustering.
During the training step, the algorithms are taught...
List all the modules that are part of a python package?
Is there a straightforward way to find all the modules that are part of a python package? I've found this old discussion , which is not really conclusive, but I'd love to have a definite answer before I roll out my own solution based on os.listdir().
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