利用sregex_iterator找出所有符合指定regular expression的子字串

<<程式>>

#include <regex>
#include <string>
#include <iostream>
using namespace std;
 
int _tmain(int argc, _TCHAR* argv[])
{
 try{
  regex re("\\d++");
  string input("123 23 435 asd 000");
  sregex_iterator ite(input.begin(), input.end(), re);
  sregex_iterator iteEnd;
  for(; ite != iteEnd; ++ite){
   cout << "found: " << ite->str() << " at " << ite->position() << " length " << ite->length() << endl;
  }
 } catch(regex_error& e){
  cout << "Error: " << e.what() << endl;
 }
 return 0;
}

<<輸出>>


found: 123 at 0 length 3
found: 23 at 4 length 2
found: 435 at 7 length 3
found: 000 at 15 length 3

在c#中正確處理Unicode

程式碼:

string s = "哈\uD950\uDF21高";   Console.WriteLine("string length:" + s.Length);  
TextElementEnumerator textEnum =
   StringInfo.GetTextElementEnumerator(s);   while (textEnum.MoveNext())   {   
   Console.WriteLine("word {0}: {1}",
     textEnum.ElementIndex, 
     textEnum.Current.ToString());  
}
* This source code was highlighted with Source Code Highlighter.

輸出:
string length:4
word 0: 哈
word 1: ??
word 3: 高

重點:

• UTF-32等同於UCS-4 (Universal Character Set –4 ), 編碼範圍在0~7F FF FF FF
  
• UTF-16不等同於UCS-2。USC-2只涵蓋部分USC-4的字元。而UTF-16可以涵蓋所有UTF-32的字元
  
• UTF-16利用surrogate機制，讓某些UTF-32的字元以一對UTF-16編碼的形式來表示
  
• USC-2跟UTF-16的差別在於有無surrogate機制上
  
• .Net使用的char型別存放的是UTF-16

Doxgen筆記

格式:

/**
  * @warning A Warning!!
  */

在Microsoft Access筆記中

參照到使用者介面物件

• [Forms]![Questions]![RawData 子表單].Form![answer]

取得目前使用者

• http://www.utteraccess.com/forum/CurrentUser-returns-Admi-t1201126.html :

Have you implemented Access' security? Because the built-in CURRENTUSER function returns the ACCESS user, not the WINDOWS user. If you haven't implemented Access' workgroup security, everyone is an "ADMIN" user. If you want to get the name of the WINDOWS/network user logged in, see this link:
http://www.mvps.org/access/api/api0008.htm

 

• Environ("USERNAME")