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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...= new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYea...
Hidden Features of MySQL
... access. For example:
--datadir will specify the data directory and
--skip-innodb will turn off the inno option and save you 10-20M
More here
http://dev.mysql.com/tech-resources/articles/mysql-c-api.html
Download Chapter 7 - Free
InnoDB is transactional but there is a performance overhead that...
Create an index on a huge MySQL production table without table locking
...SQL is really, really stupid about this (and a few other things).
Test Script:
(
for n in {1..50}; do
#(time mysql -uroot -e 'select * from website_development.users where id = 41225\G'>/dev/null) 2>&1 | grep real;
(time mysql -uroot -e 'update website_development.users set...
Daylight saving time and time zone best practices [closed]
...Perl, use DateTime.
If using Python, use pytz or dateutil.
If using JavaScript, use moment.js with the moment-timezone extension.
If using PHP > 5.2, use the native time zones conversions provided by DateTime, and DateTimeZone classes. Be careful when using DateTimeZone::listAbbreviations() - see...
水果vs蔬菜智能分类器 - EdgeML图像识别项目 · App Inventor 2 中文网
...= new QRCode("qrcode", { text: window.location.href + "?f=share", //URL地址 width: 150, height: 150, colorDark: '#000000', //二维码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYea...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...r架构图
boost多索引容器multi_index_container性能测试
原文地址：http://blog.csdn.net/gongxinheng/archive/2010/03/27/5421914.aspx
by: HengStar 2010/3/27
我是一名游戏开发程序员，研究C++ Boost库已经有一小段时日了，学的越多愈发愈感觉出它的强...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...W3520. You can verify that the program works using the following Python script, assuming a program name of sort1mb.exe.
from subprocess import *
import random
sequence = [random.randint(0, 99999999) for i in xrange(1000000)]
sorter = Popen('sort1mb.exe', stdin=PIPE, stdout=PIPE)
for value in sequ...
RESTful Authentication
...REST. Since we allow communication not only over HTTP/1.1, but also named pipes or GDI messages (locally), we tried to implement a truly RESTful authentication pattern, and not rely on HTTP specificity (like header or cookies).
Later Note: adding a signature in the URI can be seen as bad practice (...
Cross-browser testing: All major browsers on ONE machine
...ly outdated. For this reason, I refer to Usage share of web browsers on Wikipedia, and the following sites for the latest browser version information. Each site is suffixed by a brief usage guide.
Can I use - Browser usage table, based on data from StatCounter and other sources.
StatCounter - Stat...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...对于这个方法，我这回需要操作的结果是将name指向value的地址，并且得到方法的返回值。
类似这样的需求，我们就可以这样定义期望过程：
TEST(SimpleTest, F1) {
std::string* a = new std::string("yes");
std::string* b = new std::string(...