[Tagged Pointers] 1.what is tagged pointer? 2.原理剖析…

Swift 圈中有一个被反复讨论的话题是:何时使用struct,何时使用class.我觉得今天我也要给出我的个人观点. 值 VS 引用 答案真的很简单了:当你需要用值语义的时候使用class,需要用引用语义使用struct.就是这样! 我们下周再见- 等下 干啥? 还没回答我的问题呢 你啥意思?答案不明摆着么? 哦,但是- 啥? 什么是值/引用语义? 哦我明白了,我可能接下来会探讨下. 还有他们是如何关联到class和struct上的 嗯 所有都归根结底到数据以及数据存储的位置.我们把东西存在局…

[A tour of V8: Garbage Collection] http://jayconrod.com/posts/55/a-tour-of-v8-garbage-collection 基本是这篇文章的翻译,但是对上半部分结构做了改动,去掉了关系不太紧密的部分,调整了结构,增加了相关知识介绍.   背景知识:   1, 一个对象如果被根对象引用或者被另一个活对象引用,那它就是活的.其他的都是垃圾.       根对象是由V8或者浏览器引用的.例如,被本地变量引用的对象是根 对象,因为当前…

2.5 – Garbage Collection  自动垃圾回收 Lua 5.3 Reference Manual http://www.lua.org/manual/5.3/manual.html#2.1 2.5 – Garbage Collection Lua performs automatic memory management. This means that you do not have to worry about allocating memory for new object…

转:http://phrack.org/papers/attacking_javascript_engines.html Title : Attacking JavaScript Engines: A case study of JavaScriptCore and CVE-2016-4622 Author : saelo Date : October 27, 2016 |=-------------------------------------------------------------…

swift是对oc的扩展 Swift是没有消息机制的Objective-C https://www.oschina.net/translate/inside-swift: swift保持了oc的类结构形式,对函数的派发机制做了调整. 一.class swift完全继承了oc class类的运行时结构: 或者说swift class 和 oc class的运行时结构具有等价性: swift的编译器将class的缺省运行机制编译为静态派发和虚函数表派发: 添加特殊@objec符号后,使用的是oc运行…

SOLUTION VERIFIED February 5 2014 KB340153 Environment Red Hat Enterprise Linux 6 (All Versions) Red Hat Enterprise Linux 5 (All Versions) Issue Need to configure VLAN on bonded interface and a bridge on top of this VLAN tagged bonded interface. Reso…

SOLUTION VERIFIED April 27 2013 KB26727 Environment Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Issue How to create a bridge using a tagged vlan (8021.q) interface? Resolution Create the VLAN interface (here using eth0) # vi /etc/sysconfig/…

题目链接:Populating Next Right Pointers in Each Node II | LeetCode OJ Follow up for problem "Populating Next Right Pointers in Each Node". What if the given tree could be any binary tree? Would your previous solution still work? Note: You may only u…

题目链接:Populating Next Right Pointers in Each Node | LeetCode OJ Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } Populate each next pointer to point to its next right node. If there is no next ri…