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How do you express binary literals in Python?
...nteger in most cases) - just pass int the string of zeros and ones and the base you are converting from (2):
>>> int('010101', 2)
21
You can optionally have the 0b or 0B prefix:
>>> int('0b0010101010', 2)
170
If you pass it 0 as the base, it will assume base 10 if the string ...
Fast way to get image dimensions (not filesize)
...xImageString .= sprintf("%02x", ord($ByteStream[$i]));
if ($Salto==64){
$this->HexImageString .= "\n";
$Salto = 0;
}
}
}
}
private function Byte2PosInt($Byte08,$Byte00) {
return ((ord($Byte08) & 0xFF) << 8)|((ord($Byte00) & 0xF...
How to sort a dataframe by multiple column(s)
... Easy enough: dd[ order(-dd[,4], dd[,1]), ], but can't use with for name-based subsetting.
– Dirk Eddelbuettel
Oct 21 '12 at 14:34
...
How to round the minute of a datetime object
...-01-01 01:03:34.285714285
7 2019-01-01 01:04:00.000000000
dtype: datetime64[ns]
>>> ts.dt.round('1min')
0 2019-01-01 01:01:00
1 2019-01-01 01:01:00
2 2019-01-01 01:02:00
3 2019-01-01 01:02:00
4 2019-01-01 01:03:00
5 2019-01-01 01:03:00
6 2019-01-01 01:04:00
7 2019-01-01 0...
Recommendations of Python REST (web services) framework? [closed]
Is there a list somewhere of recommendations of different Python-based REST frameworks for use on the serverside to write your own RESTful APIs? Preferably with pros and cons.
...
C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...->p的偏移之所以是0x8而不是0x6，是因为内存对齐了（我在64位系统上）。关于内存对齐，可参看《深入理解C语言》一文。
好了，现在你知道为什么原题中会访问到了0x4的地址了吧，因为是相对地址。
相对地址有很好多处，其...
AWS MySQL RDS vs AWS DynamoDB [closed]
...r while MySQL is used for relational storage. You should pick what to use based on the actual needs of your application. In fact, some applications might be well served by using both.
If, for example, you are storing data that does not lend itself well to a relational schema (tree structures, sche...
How to remove the arrow from a select element in Firefox
...ebkit-appearance: none;
-moz-appearance: none;
appearance: none;
}
DEMO
select {
margin: 50px;
border: 1px solid #111;
background: transparent;
width: 150px;
padding: 5px;
font-size: 16px;
border: 1px solid #ccc;
height: 34px;
-webkit-appearance: none;
-moz...
Chrome Dev Tools - “Size” vs “Content”
...ritten as KB. It would be better if they reported it either in ISO format (base 10) or write it as KiB/MiB.
– okdewit
Jun 15 '16 at 13:43
1
...
How to vertically align an image inside a div
...s a good start, but oversized images have a wrong ratio.
Here's my fork:
Demo: https://jsbin.com/lidebapomi/edit?html,css,output
HTML:
<div class="frame">
<img src="foo"/>
</div>
CSS:
.frame {
height: 160px; /* Can be anything */
width: 160px; /* Can be anythin...