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“信息分享器”误点了始终按钮，还能恢复初始的选择选项吗？ - App应用开发...
Q：分享器打开后原有很多可选的APP，包括微信，地图等等，对话框下有（始终）和（仅一次），误点了（始终），则再次打开就只有一种选择，重新安装后也是如此，换个手机就又好了，但是如再次点击（始终）选择，则这个...
App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
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HC05 简单介绍
它有六个引脚，引脚的作用如下：
通过厂商App连接串口测试，发现HC-05模块是经典蓝牙2.0，并不支持蓝牙5.0（低功耗BLE），它需要配对码进行配对，App Inventor 2 中使用“蓝牙客户端”组件，...
Python decorators in classes
... showing you this code snippet because this is what your decorator snippet transforms into.
So, as you can see, accessing the instance in a decorator like that isn't really possible since decorators are applied during the definition of whatever function/method they are attached to and not during in...
Get all unique values in a JavaScript array (remove duplicates)
...r of Set takes an iterable object, like Array, and the spread operator ... transform the set back into an Array. Thanks to Lukas Liese for hint in comment.
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How to check if a file is a valid image file?
...orming the image manipulation (and I think that flip is one of the cheaper transformations).
With this code you are going to verify a set of images at about 10 MBytes/sec with standard Pillow or 40 MBytes/sec with Pillow-SIMD module (modern 2.5Ghz x86_64 CPU).
For the other formats psd,xcf,.. you c...
Difference between CSS3 transitions' ease-in and ease-out
... to produce the illusion of motion. With a steps(8) animation and a rotate transform, you’re using motion to produce the illusion of separate frames! How fun.
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How to execute XPath one-liners from shell?
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You should try these tools :
xmlstarlet : can edit, select, transform... Not installed by default, xpath1
xmllint : often installed by default with libxml2-utils, xpath1 (check my wrapper to have --xpath switch on very old releases and newlines delimited output (v < 2.9.9)
xpath : ...
What is Virtual DOM?
... what will become real elements (this is step 1). Then that output will be transformed into real HTML, which is what gets displayed in the browser (This is step 2).
So why go through all this to generate a virtual DOM?
Simple answer — This is what allows react to be fast. It does this by mean...
What's the best way to store a group of constants that my program uses? [closed]
...y if these settings come from AppSettings and you change them using config transformations because the settings are environment specific.
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C++ 线程安全的单例模式 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ 线程安全的单例模式一、懒汉模式：即第一次调用该类实例的时候才产生一个新的该类实例，并在以后仅返回此实例。需要用锁，来保证其线程安全性：原因：多个线程 一、懒汉模式：即第一次调用该类实例的时候才产生...