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Signed to unsigned conversion in C - is it always safe?
Suppose I have the following C code.
8 Answers
8
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Why does flowing off the end of a non-void function without returning a value not produce a compiler
Ever since I realized many years ago, that this doesn't produce an error by default (in GCC at least), I've always wondered why?
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Remove all classes that begin with a certain string
I have a div with id="a" that may have any number of classes attached to it, from several groups. Each group has a specific prefix. In the javascript, I don't know which class from the group is on the div. I want to be able to clear all classes with a given prefix and then add a new one. If I want...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...模式下的中断机制
查找 interrupt handler 入口
IDT 表中 descriptor 类型的检查
使用 16-bit gate descriptor
IDT 表的 limit 检查
请求访问 interrupt handler 时的权限检查
gate 的权限设置
interrupt handler 的 code segment 权限设置
使用 interrupt...
pdf2htmlEX实现pdf转html - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...下的截图：
windows下载地址：pdf2htmlEX-v1.0-win32-static
本人开发的一个功能：文档在线阅读，要求能够支持移动终端浏览器在线阅读。考虑过将文档先转pdf，然后在将pdf转swf，利用flexpaper在前端浏览器访问。但是由于safari浏...
Is it possible to modify variable in python that is in outer, but not global, scope?
Given following code:
9 Answers
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how to run two commands in sudo?
Is there any way how I can run two Db2 commands from a command line? (They will be called from a PHP exec command.)
10 An...
How do you use vim's quickfix feature?
I'm a pretty new Vim user and I've found that its learning curve is quite steep (at least for me). I just installed this vim script for JavaScriptLint error checking, which shows errors in vim's quickfix window once I save a buffer.
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C++ templates that accept only certain types
In Java you can define generic class that accept only types that extends class of your choice, eg:
14 Answers
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一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术
...据库技术，它基于密码学中的椭圆曲线数字签名算法（ECDSA）来实现去中心化的P2P系统设计。但区块链的作用不仅仅局限在比特币上。现在，人们在使用“区块链”这个词时，有的时候是指数据结构，有时是指数据库，有时则是...