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How to convert UTF-8 byte[] to string?
...ts b4b5dfe475e58b67
public static class Ext {
public static string ToHexString(this byte[] hex)
{
if (hex == null) return null;
if (hex.Length == 0) return string.Empty;
var s = new StringBuilder();
foreach (byte b in hex) {
s.Append(b.ToString(...
Most lightweight way to create a random string and a random hexadecimal number
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I got a faster one for the hex output. Using the same t1 and t2 as above:
>>> t1 = timeit.Timer("''.join(random.choice('0123456789abcdef') for n in xrange(30))", "import random")
>>> t2 = timeit.Timer("binascii.b2a_hex(os.urandom(15...
How to hash some string with sha256 in Java?
...a, and if you want to represent that in a string, you should use base64 or hex... don't try to use the String(byte[], String) constructor.
e.g.
MessageDigest digest = MessageDigest.getInstance("SHA-256");
byte[] hash = digest.digest(text.getBytes(StandardCharsets.UTF_8));
...
Restore the state of std::cout after manipulating it
...exactly what you need. :-)
Example based on your code snippet:
void printHex(std::ostream& x) {
boost::io::ios_flags_saver ifs(x);
x << std::hex << 123;
}
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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...时候，其 实还有一个消息队列，因为一个线程不一定只接收一种消息而且不一定马上就能处理完并返回，这个消息队列我们把它叫做消息分发队列或者简称分发队列用来与系 统的消息队列区分，注意分发队列里面的消息都是已...
Generate random string/characters in JavaScript
...two, for example, you'll see your number represented in binary. Similar to hex (base 16), base 36 uses letters to represent digits beyond 9. By converting a random number to base 36, you'll wind up with a bunch of seemingly random letters and numbers.
– Chris Baker
...
How to create a GUID/UUID in Python
....uuid4())
'f50ec0b7-f960-400d-91f0-c42a6d44e3d0'
>>> uuid.uuid4().hex
'9fe2c4e93f654fdbb24c02b15259716c'
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Add leading zeroes/0's to existing Excel values to certain length
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This works well with decimal numbers... but what about hexadecimal? I can't find a way to make leading 0s work with it...
– Shadow
Nov 23 '12 at 4:29
10
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How to compare binary files to check if they are the same?
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I ended up using hexdump to convert the binary files to there hex representation and then opened them in meld / kompare / any other diff tool. Unlike you I was after the differences in the files.
hexdump tmp/Circle_24.png > tmp/hex1.txt
h...
Hash String via SHA-256 in Java
...tes(StandardCharsets.UTF_8));
byte[] digest = md.digest();
String hex = String.format("%064x", new BigInteger(1, digest));
System.out.println(hex);
}
}
In the snippet above, digest contains the hashed string and hex contains a hexadecimal ASCII string with left zero padding.
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