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Why are flag enums usually defined with hexadecimal values
A lot of times I see flag enum declarations that use hexadecimal values. For example:
6 Answers
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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...户可以直接用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信。广播访问地址广播包：广播包Access Address 固定为0x8E89BED6，广播包只能在广播信道（channel...
What is a regular expression for a MAC Address?
... printing MAC-48 addresses in
human-friendly form is six groups of
two hexadecimal digits, separated by
hyphens - or colons :.
So:
^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$
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Hash function that produces short hashes?
...ort hashlib
>>> hash = hashlib.sha1("my message".encode("UTF-8")).hexdigest()
>>> hash
'104ab42f1193c336aa2cf08a2c946d5c6fd0fcdb'
>>> hash[:10]
'104ab42f11'
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How to change the output color of echo in Linux
... # Cyan
On_IWhite='\033[0;107m' # White
the escape character in bash, hex and octal respectively:
| | bash | hex | octal | NOTE |
|-------+-------+--------+---------+------------------------------|
| start | \e | \x1b | \033 | ...
jQuery Data vs Attr?
...s was a contrived example. For storing color values, I used to use numeric hex notation (i.e. 0xABC123), but it's worth noting that hex was parsed incorrectly in jQuery versions before 1.7.2, and is no longer parsed into a Number as of jQuery 1.8 rc 1.
jQuery 1.8 rc 1 changed the behavior of auto-c...
Regular expression for a hexadecimal number?
How do I create a regular expression that detects hexadecimal numbers in a text?
11 Answers
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Python: How to create a unique file name?
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I think uuid.uuid4().hex would be a better choice, see detail here.
– Grey Li
Jul 9 '17 at 1:55
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Change text color based on brightness of the covered background area?
...article to determine a suitable foreground color:
function getContrastYIQ(hexcolor){
hexcolor = hexcolor.replace("#", "");
var r = parseInt(hexcolor.substr(0,2),16);
var g = parseInt(hexcolor.substr(2,2),16);
var b = parseInt(hexcolor.substr(4,2),16);
var yiq = ((r*299)+(g*587)+...
What type of hash does WordPress use?
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thanks but i thought md5 hashes had to be in hex, like this: b1946ac92492d2347c6235b4d2611184 why does this hash have chars A-Z and . in it? is it a md5 hash?
– Amanda Kumar
Jun 25 '09 at 21:00
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