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ATL正则表达式库使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
"d([0-9])", // digit
"h([0-9a-fA-F])", // hex digit
"n(\r|(\r?\n))", // newline
"q(\"[^\"]*\")|(\''''[^\'''']*\'''')", // quoted string
"w([a-zA-Z]+)", // simple word
"z([0-9]+)", // integer
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2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...近30年的发展，并且可以衍生到很多类似的领域：存储，功耗，带宽，像素。而下面这个是冯诺伊曼，20世纪最重要的数学家之一，在现代计算机、博弈论和核武器等诸多领域内有杰出建树的最伟大的科学全才之一。他提出(技术)...
JavaScript string encryption and decryption?
...rs = text => text.split('').map(c => c.charCodeAt(0));
const byteHex = n => ("0" + Number(n).toString(16)).substr(-2);
const applySaltToChar = code => textToChars(salt).reduce((a,b) => a ^ b, code);
return text => text.split('')
.map(textToChars)
.map(a...
What are all the escape characters?
...ces:
\u{0000-FFFF} /* Unicode [Basic Multilingual Plane only, see below] hex value
does not handle unicode values higher than 0xFFFF (65535),
the high surrogate has to be separate: \uD852\uDF62
Four hex characters only (no variable width) */
\...
Elegant way to search for UTF-8 files with BOM?
...nd files (Alt + F7) → file types *.* → Find text "EF BB BF" → check 'Hex' checkbox → search
And you get the list :)
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Tool for comparing 2 binary files in Windows [closed]
...ilities:
VBinDiff (binary diff, designed for large files)
WinDiff
bsdiff
HexCmp
See also: https://web.archive.org/web/20151122151611/https://stackoverflow.com/questions/688504/binary-diff-tool-for-very-large-files
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How to create a string with format?
...ou:
let timeNow = time(nil)
let aStr = String(format: "%@%x", "timeNow in hex: ", timeNow)
print(aStr)
Example result:
timeNow in hex: 5cdc9c8d
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Get a pixel from HTML Canvas?
...ntext, x, y)
{
var p = context.getImageData(x, y, 1, 1).data;
var hex = "#" + ("000000" + rgbToHex(p[0], p[1], p[2])).slice(-6);
return hex;
}
function rgbToHex(r, g, b) {
if (r > 255 || g > 255 || b > 255)
throw "Invalid color component";
return ((r <<...
What exactly does stringstream do?
...ing streams.
ostringstream os;
os << "dec: " << 15 << " hex: " << std::hex << 15 << endl;
cout << os.str() << endl;
The result is dec: 15 hex: f.
istringstream is of more or less the same usage.
To summarize, stringstream is a convenient way to m...
How many bytes does one Unicode character take?
...g one Unicode char. Here is the rule for UTF-8 encoded strings:
Binary Hex Comments
0xxxxxxx 0x00..0x7F Only byte of a 1-byte character encoding
10xxxxxx 0x80..0xBF Continuation byte: one of 1-3 bytes following the first
110xxxxx 0xC0..0xDF First byte of a 2-byte character enco...