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【最全】谈如何升级aiStarter内置AI伴侣的方式及原理 - App Inventor 2 中...
...能安装不了商业模拟器。
言归正传，本文重点是谈谈如何升级aiStarter中内置的AI伴侣这个问题的，而且说明一下每种方式背后的原理。本文假设你会使用aiStarter进行常规的App测试。1、启动aiStarter模拟器，使用内置的浏览器输...
如何更改启动屏幕 - App应用开发 - 清泛IT社区，为创新赋能！
...做一个登录屏幕login，但这个新建的login是在screen1后面，如何调换它们的位置，让APP启动时，先从login启动？无法指定启动的屏幕，默认就是特定的Screen1。两种思路：
1、使用“复制屏幕”功能将Screen1复制一份为主屏幕，原来的...
如何实现设置用户头像功能呢？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
在inventor中如何实现调用相册功能选择图片设置成用户头像功能呢，就是类似于微信中点击头像会弹出从相册中选择或者拍照来设置头像的功能
多媒体下面的组件可以实现，具体用法参考中文文档：https://www.fun123.cn/reference/comp...
How to add new column to MYSQL table?
I am trying to add a new column to my MYSQL table using PHP. I am unsure how to alter my table so that the new column is created. In my assessment table I have:
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Maximum execution time in phpMyadmin
..._time = 5000
max_input_time = 5000
memory_limit = 1000M
And change xampp\mysql\bin\my.ini
max_allowed_packet = 200M
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Are PDO prepared statements sufficient to prevent SQL injection?
...CII \ i.e. 0x5c. As it turns out, there are 5 such encodings supported in MySQL 5.6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here.
Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. There is another way of doing it, but we...
#1071 - Specified key was too long; max key length is 1000 bytes
...The INT(1) and INT(32) data types indicates another misunderstanding about MySQL. The numeric argument has no effect related to storage or the range of values allowed for the column. INT is always 4 bytes, and it always allows values from -2147483648 to 2147483647. The numeric argument is about p...
How do I get the “id” after INSERT into MySQL database with Python?
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Also, cursor.lastrowid (a dbapi/PEP249 extension supported by MySQLdb):
>>> import MySQLdb
>>> connection = MySQLdb.connect(user='root')
>>> cursor = connection.cursor()
>>> cursor.execute('INSERT INTO sometable VALUES (...)')
1L
>>> connect...
将Linux代码移植到Windows的简单方法 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...一项困难的工作。本文将以一个实际的例子（Tar）来说明如何把Linux代码移植到Windows平台上。移植过程将尽量少修改代码,以便代码的运行逻辑不会发生任何变动。保留绝大部分软件主要功能。
二．准备工作
Tar是Linux平台下面...
Select mySQL based only on month and year
I have a column in my mySQL DB that has some rows. One of this row is a DATE, like this: 2012-02-01
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