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转型产品经理必看 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...看到这个行业的细节，产品让我出门，让我看到更广阔的空间。这个过程中没少走过弯路，经历过开始的好奇、憧憬，到中途的迷茫、自我否定，过度到现在的慢慢开悟和真正理解产品。人的成长本来就是一个过程，春天播种秋...
裁员！裁员！创业者们的2016“寒冬大逃杀” - 资讯 - 清泛网 - 专注IT技能提升
...表现的话，不排除在明年年底之前，一级市场企业的增长空间会重新打开”。
“我们还是在最好的时代，哪怕现在有寒冬的阴影，”张赢说，在美国，中小企业家创造和贡献了70%的GDP，也真正的拉动了就业和刺激了经济。任何...
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...
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...
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...
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...