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App Inventor 2 数学代码块 · App Inventor 2 中文网
...们 关注我，不迷路 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { ...
Select SQL Server database size
...NLINE SIMPLE 16404.13 15213.00 192.69 1191.13 15.55 2015-11-10 10:51:02.000 44.59 NULL NULL
10 locateme ONLINE SIMPLE 1050.13 591.00 2.94 459.13 6.9...
Why should I use version control? [closed]
...ol right now, even if you don't know it. Do you have any folders that say "XXX Php Code (December)" or "XXX.php.bak.2"? These are forms of version control already. A good version control system will take care of this for you automatically. You will be able to roll back to any point in time (that you...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...户，如果要与BAT为代表的国内移动支付平台来对抗，显然在线下商户覆盖上的竞争力不足。而且，搭载银行POS机的方式在支付手续费上并不占优，从往常来看，银行POS机的支付手续费要比百度钱包、支付宝、微信支付等平台要高...
Hashing a file in Python
...ile
$ python hashes.py bigfile
MD5: a981130cf2b7e09f4686dc273cf7187e
SHA1: 91d50642dd930e9542c39d36f0516d45f4e1af0d
$ md5 bigfile
MD5 (bigfile) = a981130cf2b7e09f4686dc273cf7187e
$ shasum bigfile
91d50642dd930e9542c39d36f0516d45f4e1af0d bigfile
Hope that helps!
Also all of this is outlined in th...
The application may be doing too much work on its main thread
...android app.
Solution - I just shifted that particular image to drawables-xxx folder from drawables and was able free a lot of memory occupied in background and the skipping frames were no longer skipping.
Update Use 'nodp' drawable resource folder for storing background drawables
files.
Will a ...
create a trusted self-signed SSL cert for localhost (for use with Express/Node)
...ress();
const server = https.createServer({
key: fs.readFileSync('/XXX/localhost+2-key.pem'), // where's me key?
cert: fs.readFileSync('/XXX/localhost+2.pem'), // where's me cert?
requestCert: false,
rejectUnauthorized: false,
}, app).listen(10443); // get creative
...
Best practice: PHP Magic Methods __set and __get [duplicate]
...ing getters for properties is more consistent with "real" methods where getXXX() is not only returning a private property but doing real logic. You have the same naming. For example you have $user->getName() (returns private property) and $user->getToken($key) (computed). The day your getter g...
MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
... Toolkit
Tungsten-replicator
补充：Percona和SkySQL都提供了MySQL在线配置工具，使用起来非常方便。
补充：Yoshinori释出了MySQL-MHA项目，有助于提高MySQL主从复制的可靠性。
说明：本文参考了下面列出的书籍中相关的内容：
High Perfor...
What is the difference between '>' and a space in CSS selectors?
... > div.name matches <div class='card'>....<div class='name'>xxx</div>...</div>
but it doesn't match <div class='card'>....<div class='foo'> ... <div class='name'>xxx</div>..</div>....</div>
div.card div.name matches both.
That is, the ...