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Drawable image on a canvas
...setBounds(left, top, right, bottom);
d.draw(canvas);
This will work with all kinds of drawables, not only bitmaps. And it also means that you can re-use that same drawable again if only the size changes.
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Transaction isolation levels relation with locks on table
...B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in the table while writing on it. This means A writes data (uncommitted) and B can read this uncommitted data and use it...
Where is my .vimrc file?
I have been using Vim , and I would really like to save my settings. The problem I am having is that I cannot find my .vimrc file, and it is not in the standard /home/user/.vimrc location. How might I find this file?
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C++/COM VARIANT实现二维数组 - C/C++ - 清泛网 - 专注C/C++及内核技术
...以两种不同方式来实现VARIANT二维数组的操作。
1、使用SAFEARRAY实现二维数组
SAFEARRAY安全数组可以实现多维数组，SAFEARRAY实现的步骤可以大致分为三步。
（1）创建SAFEARRAY安全数组，包括设置数组元素的类型、数据的维数，大小...
【最全】谈如何升级aiStarter内置AI伴侣的方式及原理 - App Inventor 2 中...
...们已经做好了最新的绿色版，解压即可使用：
https://www.fun123.cn/reference/creative/ai2_starter.html?f=post感谢分享{:8_381:}谢谢分享！
Discuz轻松生成sitemaps.xml网站地图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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PS：注意编码，选择自己DZ对应的编码，我自己用的是UTF-8版本DZ
<?php
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
$filename='sitemaps.xml';
//以下五项根据具体情况修改即可
$cfg_updateperi='60';//协议文件更新周期的上限，单位为分...
nFC Connect低功耗蓝牙APP工具的使用 - 创客硬件开发 - 清泛IT社区，为创新赋能！
nRF Connect是一款由NORDIC开发的专门用于低功耗蓝牙测试APP，仅支持安卓平台。这款APP可以扫描和探索低功耗蓝牙设备，并与它们进行通信。它支持许多蓝牙 SIG 采用的配置文件，以及Nordic Semiconductor或Google的Eddystone的设备固件更新...
ble 蓝牙透传代码怎么写？ - 创客硬件开发 - 清泛IT社区，为创新赋能！
...个模块这个地址可以吗？
上图中是控制服务id：SERVICEF000_UUUID = UUID.fromString("0000f000-0000-1000-8000-00805f9b34fb");以及2个控制端口的特征id。
可以做到透传，不过要换透传 id，这个 id 是 io 控制口
晚一些我给你一下 透传 id...
代码块测试 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
.../1999/xhtml"><block type="component_event" id="v=f9{T,j}`%n4Ix;zwlz" x="20" y="40"><mutation component_type="Form" is_generic="false" instance_name="Screen1" event_name="Initialize"></mutation>&...
How do I choose between Semaphore and SemaphoreSlim?
...uld be used when "wait times are expected to be very short". That would usually dovetail nicely with the idea that the slim version is more lightweight for most of the trade offs.
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