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Best practices/performance: mixing StringBuilder.append with String.concat
...hrough the
StringBuilder(or StringBuffer) class and its append method.
Offical document: https://docs.oracle.com/javase/8/docs/api/java/lang/String.html
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How do I create a constant in Python?
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365
There's no const keyword as in other languages, however it is possible to create a Property th...
Token Authentication for RESTful API: should the token be periodically changed?
...he attacker tests 1000 token every second, it requires 16**40/1000/3600/24/365=4.6*10^7 years to get the token. You should not worried that the attacker will test your token one by one. Even you changed your token, the probability of guess you token is the same.
If you are worried that maybe the at...
Open link in new tab or window [duplicate]
... be nice make some links open in new tabs without teaching everyone in the office how to ctrl+click.
– TecBrat
Mar 14 '14 at 17:15
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Simple Pivot Table to Count Unique Values
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As of Office 2016: To be able to use this feature pivot table should be created with "Add this data to the Data Model" checked.
– Leo
Sep 24 '18 at 14:26
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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...通俗易懂Coursera – Specializations
学习Hive，Pig这些基本工具，如果做应用层，主要是把Hadoop的一些工作流要熟悉，包括一些基本调优，如果是想做架构，除了能搭建集群，对各个基础软件服务很了解，还要理解计算机的瓶颈和...
实战Nginx与PHP（FastCGI）的安装、配置与优化 - 更多技术 - 清泛网 - 专注...
...--enable-fastcgi”是启用对PHP的FastCGI支持，“--enable-fpm”是激活对FastCGI模式的fpm支持。
在编译PHP时可以加入很多编译选项，但是这里为了介绍PHP的FastCGI功能没有加入更多的编译选项。
4.配置与优化PHP-FPM
PHP的全局配置文件是php.i...
How do I efficiently iterate over each entry in a Java Map?
...220 µs/op
test8_UsingJava8StreamApiParallel avgt 10 112.511 ± 0.365 µs/op
test9_UsingApacheIterableMap avgt 10 125.714 ± 1.935 µs/op
For a map with 100000 elements, score 1184.767 is the best
Benchmark Mode Cnt Score Error Units
t...
Convert xlsx to csv in Linux with command line
...e files. for f in *.csv; do ssconvert "$f" "${f%.csv}.xlsx"; done The LibreOffice method could probably process other formats, but I could not make it work (it would simply open a blank file every time, even with the --headless argument).
– sleblanc
Aug 15 '13 ...
How to extract epoch from LocalDate and LocalDateTime?
... numbers in your code:
The result 1605 is correct
=> (2014 - 1970) * 365 + 11 (leap days) + 31 (in january 2014) + 3 (in february 2014)
The result 71461 is also correct => 19 * 3600 + 51 * 60 + 1
16105L * 86400 + 71461 = 1391543461 seconds since 1970-01-01T00:00:00 (attention, no timezone...