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Whitespace Matching Regex - Java
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You can’t use \s in Java to match white space on its own native character set, because Java doesn’t support the Unicode white space property — even though doing so is strictly required to meet UTS#18’s RL1.2! What it does have is not standards-conforming, alas.
Unicode defines 26 ...
What are “connecting characters” in Java identifiers?
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Here is a list of connecting characters. These are characters used to connect words.
http://www.fileformat.info/info/unicode/category/Pc/list.htm
U+005F _ LOW LINE
U+203F ‿ UNDERTIE
U+2040 ⁀ CHARACTER TIE
U+2054 ⁔ INVERTED UNDERTIE
U+FE33 ︳ PRE...
How to use unicode characters in Windows command line?
...t values:
ECHO.
ECHO ...............................................
ECHO Select Codepage
ECHO ...............................................
ECHO.
ECHO 1 - CP1252
ECHO 2 - UTF-8
ECHO 3 - CP850
ECHO 4 - ISO-8859-1
ECHO 5 - ISO-8859-15
ECHO 6 - US-ASCII
ECHO.
ECHO 9 - Reset to System Default (CP%O...
When would I need a SecureString in .NET?
...dance from MS is: SecureString shouldn't be used
– Richard Morgan
Jul 5 '19 at 11:24
add a comment
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Fast Linux File Count for a large number of files
...s:
#include <stdio.h>
#include <dirent.h>
int main(int argc, char *argv[]) {
DIR *dir;
struct dirent *ent;
long count = 0;
dir = opendir(argv[1]);
while((ent = readdir(dir)))
++count;
closedir(dir);
printf("%s contains %ld files\n", argv[1], ...
Is there a max array length limit in C++?
...ypically takes multiple times as much memory as an array of type vector<char> (minus a small constant value), since int is usually bigger than char. Therefore, a vector<char> may contain more items than a vector<int> before memory is full. The same counts for raw C-style arrays lik...
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
...I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;
}
用asio进行网络连接至少需要一个boost::asi...
Hidden features of C
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Multi-character constants:
int x = 'ABCD';
This sets x to 0x41424344 (or 0x44434241, depending on architecture).
EDIT: This technique is not portable, especially if you serialize the int.
However, it can be extremely useful to ...
Java ByteBuffer to String
...ch would be reasonable if you knew the bytes are in the platform's default charset. In your example, this is true because k.getBytes() returns the bytes in the platform's default charset.
More frequently, you'll want to specify the encoding. However, there's a simpler way to do that than the questi...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
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Do note that md5 returns hexadecimal values, meaning the character set is limited to [0-9] and [a-f].
– Thijs Riezebeek
May 15 '15 at 16:59
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