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Screenshot 拓展：截取手机屏幕 · App Inventor 2 中文网
...《服务协议》 关注公众号，精彩不错过！ #free_v { border:none; position:fixed; top:40%; left:5px; width:200px; height:500px; display: none;}@media screen and (max-width: 700px) { #free_v { top:200%; }}
App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
...略和使用条款 关注公众号，精彩不错过！ #free_v { border:none; position:fixed; top:40%; left:5px; width:200px; height:500px; display: none;}@media screen and (max-width: 700px) { #free_v { top:200%; }}
What is the difference between using IDisposable vs a destructor in C#?
...o have e.g. an array of structures, each of which may be marked "used" or "free". An allocation request should find a structure which is presently marked "free", mark it "used", and return an index to it; a release request should mark a structure as "free". If an allocation request returns e.g. 23...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
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examples
VM "intrinsification." ie CAS (Compare-And-Swap) used in Lock-Free Hash Tables
eg:sun.misc.Unsafe.compareAndSwapInt
it can make real JNI calls into native code that contains special instructions for CAS
read more about CAS here http://en.wikipedia.org/wiki/Compare-and-swap
The sun.misc...
Which HTML5 tag should I use to mark up an author’s name?
...see when using the <dl> element for article meta information, we are free to wrap <address>, <a> and even <img> tags in <dt> and/or <dd> tags according to the nature of the content and it's intended function.
The <dl>, <dt> and <dd> tags are free...
PHP and MySQL - how to avoid password in source code? [duplicate]
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@DaveRandom Feel free to edit away if you think it's appropriate to provide another example/alternative? Personally I've always preferred XML configuration files that are cached, and don't see the constant/environment variable to be too "evil...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...了二次内存分配，并把整个结构体返回给用户。用户调用free可以释放结构体，但是用户并不知道这个结构体内的成员也需要free，所以你不能指望用户来发现这个事。所以，如果我们把结构体的内存以及其成员要的内存一次性分...
How to convert an array of strings to an array of floats in numpy?
...ered Jun 12 '18 at 15:19
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Anatomy of a “Memory Leak”
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The best explanation I've seen is in Chapter 7 of the free Foundations of Programming e-book.
Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the inte...
How to unzip a file using the command line? [closed]
... to unzip a file?
Preferably something built into Windows or open source/free tools.
10 Answers
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