>>>>>>>>>>>>>>>>>>>>>>> Sep 11 2012 <<<<<<<<<<<<<<<<<<<<<<<<<

1. 有關隨機出現的內存錯誤：多線程、多C庫交叉調用、堆溢出/越界

2.?Is it legal (and moral) for a member function to say?delete this?

Here's how I define "careful":

You must be absolutely 100% positively sure that?this?object was allocated via?new?(not by?new[], nor by?placement?new, nor a local object on the stack, nor a global, nor a member of another object; but by plain ordinary?new).

You must be absolutely 100% positively sure that your member function will be the last member function invoked on?this?object.

You must be absolutely 100% positively sure that the rest of your member function (after the?delete?this?line) doesn't touch any piece of?this?object (including calling any other member functions or touching any data members).

You must be absolutely 100% positively sure that no one even touches the?this?pointer itself after the?delete?this?line. In other words, you must not examine it, compare it with another pointer, compare it with?NULL, print it, cast it, do anything with it.

>>>>>>>>>>>>>>>>>>>>>>> Sep 11 2012 <<<<<<<<<<<<<<<<<<<<<<<<<

1. windows 中可以使用nul實現/dev/null的效果，nul是windows保留的設備名稱，不可作為文件名，打開該文件語義為打開該設備文件

>>>>>>>>>>>>>>>>>>>>>>> Sep 28 2012 <<<<<<<<<<<<<<<<<<<<<<<<<

1. 編輯距離：讓兩個字符串相等所需要的最小步數

>>>>>>>>>>>>>>>>>>>>>>> Sep 29 2012 <<<<<<<<<<<<<<<<<<<<<<<<<

1. 讓vs拋出浮點數除0異常方法：

#include <float.h>int cw = _controlfp(0,0); cw &= ~(EM_OVERFLOW | EM_UNDERFLOW | EM_INEXACT | EM_ZERODIVIDE | EM_DENORMAL | EM_INVALID); _controlfp(cw,MCW_EM);

　　

>>>>>>>>>>>>>>>>>>>>>>> Sep 30 2012 <<<<<<<<<<<<<<<<<<<<<<<<<

?1. 什么是縱向擴展、橫向擴展。擴展現有系統的兩種策略，舉個例子，現有的機器處理不了我目前的問題（不夠快，存儲不夠）

? ? ?>> 縱向擴展/Scale up/ Scale Vertically: 擴展現有機器，更多的CPU、內存

? ? ?>> 橫向擴展/Scale out/Scale Horizonally: 添加新的機器

參考：http://en.wikipedia.org/wiki/Scalability

轉載于:https://www.cnblogs.com/D3Hunter/archive/2012/09/11/2680400.html

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