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二分算法（Binary Search） · App Inventor 2 中文网
...活中非常常用的折半算法，能解决快速查找、快速定位的问题。主要用到数学和逻辑代码块。
★★☆ 难度
动手完成
项目教程跟着步...
同一个过程，两种调用方式：App Inventor 里该用哪种？ - App应用开发 - 清...
...哪个过程得等运行时才知道，才用后一种。
先看用户的问题
社区里有位用户写了一个「创建工作模式参数字典」过程，有 modeID、modeName、dripRate、duration 四个参数，返回一个参数字典。然后用两种方式各调用了一次：
上面一...
htmlentities() vs. htmlspecialchars()
...
From the PHP documentation for htmlentities:
This function is identical to htmlspecialchars() in all ways, except with htmlentities(), all characters which have HTML character entity equivalents are translated into these entities....
How to create an array from a CSV file using PHP and the fgetcsv function
...
FYI: str_getcsv() is only available from PHP 5.3.0 on. The project I am working on missed it by 1 version DOH! (we are using 5.2.9 atm).
– Jim Ford
Sep 16 '09 at 19:15
...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
...
For capturing groups, I'm used to using preg_match_all in PHP and I've tried to replicate it's functionality here:
<script>
// Return all pattern matches with captured groups
RegExp.prototype.execAll = function(string) {
var match = null;
var matches = new Array();
...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
... @BobStein-VisiBone for example of the 302 redirect: create a file old.php with the code <?php header("location: http://example.com/new.php"); ?> and file new.php - <?php echo 'I am new'; ?> and go to the link. There will redirect and display the text "I am new". Then replace the cod...
Hidden Features of MySQL
...SQL/Q_22967482.html
http://www.databasejournal.com/features/mysql/article.php/10897_3355201_2
GRANT REPLICATION SLAVE ON . to slave_user IDENTIFIED BY 'slave_password'
#Master Binary Logging Config STATEMENT causes replication
to be statement-based - default
log-bin=Mike
binlog-...
MySQL Insert into multiple tables? (Database normalization?)
... table3 (@mysql_variable_here, ...);
Will stock the LAST_INSERT_ID() in a
php variable (or any language that
can connect to a database, of your
choice):
INSERT ...
Use your language to retrieve the LAST_INSERT_ID(), either by executing that literal statement in MySQL, or using for example php's m...
App Inventor 2 模拟器不能正常朗读文本的解决方法 · App Inventor 2 中文网
...e TTS 引擎）。如果需要朗读文本，可以按照以下步骤解决问题：
1. 安装语音引擎
Google TTS 引擎：
在模拟器内打开应用商店（如 Google Play Store 或其他 APK 下载平台）。
搜索并安装 Google Text-to-...
How to get Url Hash (#) from server side
...unction toward top of controller or http://example.com/yourDirectory/index.php:
function redirect()
{
if (!empty($_GET['hash'])) {
/** Sanitize & Validate $_GET['hash']
If valid return string
If invalid: return empty or false
*******************...