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Using .NET, how can you find the mime type of a file based on the file signature not the extension
..., 42, 0 };
private static readonly byte[] TORRENT = { 100, 56, 58, 97, 110, 110, 111, 117, 110, 99, 101 };
private static readonly byte[] TTF = { 0, 1, 0, 0, 0 };
private static readonly byte[] WAV_AVI = { 82, 73, 70, 70 };
private static readonly byte[] WMV_WMA = { 48, 38, 178, 117,...
MQTT物联网协议完全实践指南 · App Inventor 2 中文网
...rature/set
office/light/meeting_room/brightness/get
factory/sensor/machine_001/status/online
通配符使用规则：
// 单级通配符匹配
call UrsPahoMqttClient1.Subscribe "home/+/temperature" // 匹配 home/livingroom/temperature
// 多级通配符匹配
call UrsPahoMqttClient1.Subscribe "...
Extracting hours from a DateTime (SQL Server 2005)
...
ASpirin
2,80011 gold badge1717 silver badges2626 bronze badges
answered Aug 25 '17 at 15:59
relgremrelgrem
...
Why does Python print unicode characters when the default encoding is ASCII?
... the same)
UTF-8 encoding of Unicode code points above 127 (non-ascii):
110x xxxx 10xx xxxx <-- (from 128 to 2047)
1110 xxxx 10xx xxxx 10xx xxxx <-- (from 2048 to 65535)
the leading bits '110' indicate to the UTF-8 decoder the beginning of a code point encoded in 2 bytes, whe...
How to merge YAML arrays?
...ad (see pitfalls below).
Example
Original YAML file
list_one: &id001
- a
- b
- c
list_two: &id002
- e
- f
- g
list_three: &id003
- h
- i
- j
list_combined:
- *id001
- *id002
- *id003
Result after YAML.safe_load
## list_combi...
Does :before not work on img elements?
... font-size:larger;
margin:-1em;
}
<img src="//placekitten.com/110/80">
<picture>
<img src="//placekitten.com/110/80">
</picture>
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How to remove leading and trailing zeros in a string? Python
...a types untouched. This also handles the special case s = '0'
e.g
a = ['001', '200', 'akdl00', 200, 100, '0']
b = [(lambda x: x.strip('0') if isinstance(x,str) and len(x) != 1 else x)(x) for x in a]
b
>>>['1', '2', 'akdl', 200, 100, '0']
...
Curl GET request with json parameter
...Mac OS X 10.10; rv:57.0) Gecko/20100101 Firefox/57.0" }, "origin": "27.94.235.50, 27.94.235.50", "url": "https://httpbin.org/get" } Nothing is received. You need to use a query string like curl -X GET https://httpbin.org/get?data=%7B%22param0%22%3A%22pradeep%22%7D
– Jacqu...
Smarty中date_format日期格式化详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...围从 00 到 12）
%j - 年份中的第几天，十进制数（范围从 001 到 366）
%k - 小时，24 小时格式，没有前导零
%l - 小时，12 小时格式，没有前导零
%m - 十进制月份（范围从 01 到 12）
%M - 十进制分钟数
%n - 换行符
%p - 根据给定的时...
Passing arguments to an interactive program non-interactively
... That's what saved me. Thank you @spanchan.
– sk001
Aug 14 at 22:10
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