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https://www.tsingfun.com/it/tech/917.html 

C# 能否获取一个对象所占内存的大小? - 更多技术 - 清泛网 - 专注C/C++及内核技术

...给Student类,加上一个StructLayoutAttribute,来控制Student类的数据字段的物理布局。修改代码为: [StructLayout(LayoutKind.Sequential)] public class Student { } int size = Marshal.SizeOf(new Student()); //1个字节 LayoutKind 默认值为Auto. 结论: 1...
https://www.tsingfun.com/ilife/tech/1002.html 

比起创业孵化器 双创中国更急需的是创业教育 - 资讯 - 清泛网 - 专注C/C++...

...rek邀请的分享嘉宾中,多数会直接分享其商业逻辑和业务数据等核心要点,包括发展过程中的独门绝技和经验。而在中国,这些差异化的思维理念和方法,特别是商业逻辑,一旦公开,第二天就有超出你想象数量的山寨项目出现...
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How to use Checkbox inside Select Option

...nt: "\2611"; } You can use plain old unicode characters (with an escaped hex encoding) like these: ☐ Ballot Box - \2610 ☑ Ballot Box With Check - \2611 Or if you want to spice things up, you can use these FontAwesome glyphs .fa-square-o - \f096 .fa-check-square-o - \f046 Demo in js...
https://www.tsingfun.com/ilife/life/1841.html 

为什么你越努力,却越焦虑? - 杂谈 - 清泛网 - 专注C/C++及内核技术

...人学霸盯着屏幕一定不动;俄罗斯教授在身后噼里啪啦打数据;华裔美国人调整着公式参数。 这样的办公室,其实现在想想应该是每一个用心学习的人梦寐以求的环境,我却深深感到了一种恐惧,觉得自己仿佛不配和他们共...
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How does password salt help against a rainbow table attack?

... +1: Salt can be a portion of the hex digest of some random string built by the random number generator. Each bit is random. – S.Lott Jan 7 '09 at 16:10 ...
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What's an object file in C?

...guage code (represented in English) into machine language (represented in Hex) using an assembler. Here's a typical high level flow for this process for code in High Level Language such as C --> goes through pre-processor --> to give optimized code, still in C --> goes through compil...
https://www.tsingfun.com/it/tech/2000.html 

Java内存泄露原因详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...听器,从而增加了内存泄漏的机会。 4、各种连接 比如数据库连接(dataSourse.getConnection()),网络连接(socket)和io连接,除非其显式的调用了其close()方法将其连接关闭,否则是不会自动被GC 回收的。对于Resultset 和Statement 对...
https://www.tsingfun.com/it/cpp/1871.html 

Boost.Asio的简单使用(Timer,Thread,Io_service类) - C/C++ - 清泛网 - 专注C/C++及内核技术

...输协议不指定固定的传输格式,只要求按照ASCII标准发送数据。) using boost::asio::ip::tcp; int main(int argc, char* argv[]) { try { if (argc != 2) { std::cerr << "Usage: client <host>" << std::endl; return 1; ...
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How to check file MIME type with javascript before upload?

...below. Screenshot // Return the first few bytes of the file as a hex string function getBLOBFileHeader(url, blob, callback) { var fileReader = new FileReader(); fileReader.onloadend = function(e) { var arr = (new Uint8Array(e.target.result)).subarray(0, 4); var header = ""...
https://www.tsingfun.com/ilife/tech/1125.html 

京东天天果园与“褚橙”从合作演变成打假 - 资讯 - 清泛网 - 专注C/C++及内核技术

...“褚橙”货源还算稳定,销售期才刚刚过半,但难以具体数据评估,预计整体销售情况理想。 他告诉记者,今年“大张旗鼓”进入普通家庭的M型“褚橙”,售价在128元/5kg。比起XL级一箱(5kg)168元、约有25个“褚橙”相比,M级的...