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编程基础与事件状态 04：用状态机处理暂停和重复点击 · 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...
一个自媒体的运营手记：我做公众号已经两年多了 - 资讯 - 清泛网 - 专注C/C...
...，它的阅读量没有水分，因为这些用户基本上都是通过看我的文章后，关注来的。这个是一件非常困难的事情，因为看文章的人，大多数是不会关注公众号的，除非是特别有需求，或者特别认可文章才会加公众号，因为现在公众...
Redirect all to index.php using htaccess
... $_GET['path'] variable will contain the fake directory structure, so /mvc/module/test for instance, which you can then use in index.php to determine the Controller and actions you want to perform.
If you want the whole shebang installed in a sub-directory, such as /mvc/ or /framework/ the least c...
编程基础与事件状态 01：让按钮响应你的任务 · 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...
How to force the browser to reload cached CSS/JS files?
...css/base.css'); ?>" type="text/css" />
This way, you never have to modify the link tag again, and the user will always see the latest CSS. The browser will be able to cache the CSS file, but when you make any changes to your CSS the browser will see this as a new URL, so it won't use the ca...
How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...int dividend = columnNumber;
string columnName = String.Empty;
int modulo;
while (dividend > 0)
{
modulo = (dividend - 1) % 26;
columnName = Convert.ToChar(65 + modulo).ToString() + columnName;
dividend = (int)((dividend - modulo) / 26);
}
return...
游戏中的算法与计算思维 06：用难度与耗时形成游戏规则 · 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...
编程基础与事件状态 02：把分钟变成可以计算的秒数 · 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...
What is pseudopolynomial time? How does it differ from polynomial time?
... algorithm:
function isPrime(n):
for i from 2 to n - 1:
if (n mod i) = 0, return false
return true
So what's the time complexity of this code? Well, that inner loop runs O(n) times and each time does some amount of work to compute n mod i (as a really conservative upper bound, thi...
Splitting string into multiple rows in Oracle
...t from Regular Expressions, a few other alternatives are using:
XMLTable
MODEL clause
Setup
SQL> CREATE TABLE t (
2 ID NUMBER GENERATED ALWAYS AS IDENTITY,
3 text VARCHAR2(100)
4 );
Table created.
SQL>
SQL> INSERT INTO t (text) VALUES ('word1, word2, word...