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故乡的冬日 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...啦……”小孙子似乎没听见，自顾自地忙着“收”雪。
我忍不住走上前，“小朋友，雪好玩吗？”“好玩！”“那你想怎么玩？”“我想带回家，用彩笔把它们涂成红的、蓝的、绿的、紫的、黄的……”哈哈，这真是一个异想...
Send Email Intent
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222
when you will change your intent.setType like below you will get
intent.setType("text/plain"...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...个“足够好”的算法，或者一个起步点，这里给出了一些我觉得这些年用着还不错的常规指南。
How large is your training set?
训练集有多大？
If your training set is small, high bias/low variance classifiers (e.g., Naive Bayes) have an advantage ...
Exception thrown inside catch block - will it be caught again?
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222
No, since the new throw is not in the try block directly.
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Build error: You must add a reference to System.Runtime
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222
To implement the fix first expand out the existing web.config compilation section that looks l...
Nginx与Lua - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
shell> ldconfig
再试着启动Nginx看看，应该就OK了。
应用
我们先用一个简单的程序来暖暖场：把下面的代码加入到Nginx的配置文件nginx.conf，并重启Nginx，然后浏览，就能看到效果了。
location /lua {
set $test "hello, world.";
cont...
How can I validate a string to only allow alphanumeric characters in it?
...tterOrDigit('ก') will return true. csharppad.com/gist/f96a6062f9f8f4e974f222ce313df8ca
– tia
Nov 16 '16 at 8:28
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show 5 more comments
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What is the difference between a.getClass() and A.class in Java?
...s class2 = String.class;
Class class22 = Integer.class;
Class class222 = LinkedHashMap.class;
System.out.println("time (.class):" + (System.nanoTime() - time2) + " ns");
} }
The Output will be something like :
time (getClass()) :23506 ns
time (.class):23838 ns
And switching the o...
Convert integer to string Jinja
...om JSON content files: "hero_title_img_w": "111" and "hero_title_img2_w": "222". Then I'm adding them in .NJK file: {{ hero_title_img_w|int + hero_title_img2_w|int }} to use as image's width attribute. Hope it helps somebody one day.
– revelt
Oct 26 '16 at 12:5...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网 - 专注IT技能提升
...少，比如热门的三件套：Logstash、ElasticSearch、Kibana，可惜我对这...在数据为王的时代，日志管理是一个绕不开的话题，相应的开源软件有不少，比如热门的三件套：Logstash、ElasticSearch、Kibana，可惜我对这些高大上的东西往往心存...