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How do you validate a URL with a regular expression in Python?
...#" | "%" |
reserved = ";" | "/" | "?" | ":" | "@" | "&" | "="
hex = digit | "A" | "B" | "C" | "D" | "E" | "F" |
"a" | "b" | "c" | "d" | "e" | "f"
escape = "%" hex hex
unreserved = alpha | digit | safe | extra
uchar = unreserved | escape
...
What's a 3D doing in this HTML?
...any non-standard email octets are represented as an = sign followed by two hex digits representing the octet's value. Of course, to represent a plain = in email, it needs to be represented using quoted-printable encoding too: 3D are the hex digits corresponding to ='s ASCII value (61).
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Best way to generate random file names in Python
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Or use uuid.uuid4().hex to get an hex string without dashes (-).
– Rockallite
Nov 6 '15 at 8:25
add a comment
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How to get a random number in Ruby
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If you're not only seeking for a number but also hex or uuid it's worth mentioning that the SecureRandom module found its way from ActiveSupport to the ruby core in 1.9.2+. So without the need for a full blown framework:
require 'securerandom'
p SecureRandom.random_number...
What does (x ^ 0x1) != 0 mean?
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^ is the bitwise XOR operation
0x1 is 1 in hex notation
x ^ 0x1 will invert the last bit of x (refer to the XOR truth table in the link above if that's not clear to you).
So, the condition (0 != ( x ^ 0x1 )) will be true if x is greater than 1 or if the last bit of ...
Parsing HTML into NSAttributedText - how to set font?
...ability to set text color, just add color to style attribute with value in hex string format color: #000000. See this link for converting UIColor to hex string: gist.github.com/yannickl/16f0ed38f0698d9a8ae7
– Miroslav Hrivik
Aug 16 '17 at 14:19
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...底为：
高 ﹣（取反）
＾
﹡／
低 ﹢﹣
运算符的运算次序为从左到右按优先级高低来执行。运算的次序可以用圆括号“（）”来改变。
例4.1 算术运算符示例。
2﹣5／3，(2﹢4)／5等等。
4.1.2 逻辑运...
Find CRLF in Notepad++
...ither Ctrl+M, $ nor \r\n are matched.
The same wiki also mentions the Hex editor alternative:
Type the new string at the beginning of the document.
Then select to view the document in Hex mode.
Select one of the new lines and hit Ctrl+H.
While you have the Replace dialog box up...
What does the git index contain EXACTLY?
...e we haven't modified the file
The first bytes are seconds since EPOCH in hex:
date --date="@$(printf "%x" "540976e6")"
Gives:
Fri Sep 5 10:40:06 CEST 2014
Which is when I made this example.
The second 4 bytes are nanoseconds.
UID and GID are 00 00 03 e8, 1000 in hex: a common value for sin...
窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术
...调用和参阅。在线化的数据具有很强的流动性，可以比较低的成本交换，并且数据只有真正流动起来，它的价值才能得以最大限度地发挥。
三、打造生活服务生态 不仅是众美窝窝。
随着互联网的不断发展，互联网向各行业、...