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How to validate GUID is a GUID
...UID is a 16-byte (128-bit) number, typically represented by a 32-character hexadecimal string. A GUID (in hex form) need not contain any alpha characters, though by chance it probably would. If you are targeting a GUID in hex form, you can check that the string is 32-characters long (after strippi...
How can I generate random alphanumeric strings?
... always the same and therefore not random, for example the 13 character in hex is always "4" - at least in a version 6 GUID.
This solution also lets you generate a string of any length.
Solution 2 - One line of code - good for up to 22 characters
Convert.ToBase64String(Guid.NewGuid().ToByteArray(...
When should we use Observer and Observable?
... String: "
+ Integer.toOctalString( subject.getState() ) );
}
}
HexaObserver.java
public class HexaObserver extends Observer{
public HexaObserver(Subject subject){
this.subject = subject;
this.subject.attach(this);
}
@Override
public void update() {
System.out.print...
Text Editor which shows \r\n? [closed]
....e. View, White sapce menu).
It also has an option to display the file in hex mode (i.e. Tools, Hex Dump menu).
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What does “dereferencing” a pointer mean?
... a 32-bit pointer at 0x2000, the memory content would be:
Memory Address (hex) Variable name Contents
1000 'a' == 97 (ASCII)
1001 'b' == 98
1002 'c' == 99
1003 ...
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)...
Emulate ggplot2 default color palette
...of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
4 Answers
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How to correct TypeError: Unicode-objects must be encoded before hashing?
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>>> hashlib.sha256(str(random.getrandbits(256)).encode('utf-8')).hexdigest()
'cd183a211ed2434eac4f31b317c573c50e6c24e3a28b82ddcb0bf8bedf387a9f'
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HMAC-SHA1 in bash
...shift 3
echo -n "$data" | openssl dgst "-$digest" -hmac "$key" "$@"
}
# hex output by default
hash_hmac "sha1" "value" "key"
# raw output by adding the "-binary" flag
hash_hmac "sha1" "value" "key" -binary | base64
# other algos also work
hash_hmac "md5" "value" "key"
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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
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"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
...