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LINGO使用指南.doc - 脚本技术 - 清泛IT论坛，有思想、有深度
LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立最优化模型的语言，可以简便地表达大规模问题，利用LINGO高效的求解器可快速求解并分析结果。 §1 LINGO快速入门当你在windows下开始运行LINGO系统时...
“列表显示框”中的列表选项点不动？ - App Inventor 2 中文网 - 清泛IT社...
...项目手机点不动的话，换模拟器试试。便于找到导致这个问题的第一因素，解决大部分问题都可利用这个思路。
项目待测试排查。。。使用手机又测试了一遍，列表项可以正常点击切换。感觉有点怀疑手机兼容问题{:8_383:}
怎么通过app inventor接收mqtt平台推送的长消息 - App Inventor 2 中文网 -...
...息是图片的BASE64编码
你好，mqtt接收长消息目前是有什么问题吗？请提供详细的问题截图或报错信息。
接收的base64编码的图片，可以是使用拓展解码还原成图片：https://www.fun123.cn/reference/ ... A%E5%AA%92%E4%BD%93我想制作一个门禁系...
Get current URL path in PHP [duplicate]
...uld be :
$_SERVER['REQUEST_URI'];
Take a look at : Get the full URL in PHP
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Composer killed while updating
I got a problem, I tried to install a new package to my Laravel 4 project.
But when I run php composer.phar update I get this:
...
MySQL: determine which database is selected?
After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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How to get the request parameters in Symfony 2?
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The naming is not all that intuitive:
use Symfony\Component\HttpFoundation\Request;
public function updateAction(Request $request)
{
// $_GET parameters
$request->query->get('name');
// $_POST parameters
$request->r...
How do you use bcrypt for hashing passwords in PHP?
...d salts (bcrypt REQUIRES salts) and you can be sure that an attack is virtually unfeasible without either ludicrous amount of funds or hardware.
bcrypt uses the Eksblowfish algorithm to hash passwords. While the encryption phase of Eksblowfish and Blowfish are exactly the same, the key schedule pha...
Checking if array is multidimensional or not?
...will recursively count the array. This is particularly useful for counting all the elements of a multidimensional array. count() does not detect infinite recursion.
However this method does not detect array(array()).
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MySQL (\'root\'@\'%\') does not exist 的问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
MySQL ('root'@'%') does not exist 的问题MySQL ('root'@'%') does not exist的问题：在使用mysql时出现问题： The user specified as a definer ('...MySQL ('root'@'%') does not exist的问题：
在使用mysql时出现问题： The user specified as a definer ('root'@'%') does not exist。...