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Compression/Decompression string with C#
...) != 0) {
dest.Write(bytes, 0, cnt);
}
}
public static byte[] Zip(string str) {
var bytes = Encoding.UTF8.GetBytes(str);
using (var msi = new MemoryStream(bytes))
using (var mso = new MemoryStream()) {
using (var gs = new GZipStream(mso, CompressionMode.Compress)) {...
Executing a command stored in a variable from PowerShell
...r me. Assume
7z.exe is in the system path.
$cmd = '7z.exe'
$prm = 'a', '-tzip', 'c:\temp\with space\test1.zip', 'C:\TEMP\with space\changelog'
& $cmd $prm
If the command is known (7z.exe) and only parameters are variable then this will do
$prm = 'a', '-tzip', 'c:\temp\with space\test1.zip',...
Pandas convert dataframe to array of tuples
...w that a dedicated feature exists). BTW, if you want normal tuples in your zip iterator (instead of namedtuples), then call: data_set.itertuples(index=False, name=None)
– Axel
Oct 25 '17 at 9:47
...
推荐系统算法初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...平台上得到满足。
2. 推荐算法
算法是什么？我们可以把它简化为一个函数。函数接受若干个参数，输出一个返回值。
算法如上图，输入参数是用户和item的各种属性和特征，包括年龄、性别、地域、商品的类别、发布时间等...
SQL query for finding records where count > 1
... named PAYMENT . Within this table I have a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number.
...
How to loop through all but the last item of a list?
... easiest way to compare the sequence item with the following:
for i, j in zip(a, a[1:]):
# compare i (the current) to j (the following)
share
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improve this answer
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f...
那些我印象深刻的建议和教诲 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...白了“技术是安身立命之本”的含义，并受用至今。
要把目标设高一点
这还是大学老师的教诲。大四的时候在机房上机，我的程序很快写完了，就和授课的姜老师聊天。他问我找工作的事情，我当时看刘韧《知识英雄2.0》看...
How to check if running in Cygwin, Mac or Linux?
...
(SCO) UnixWare UnixWare
IBM AIX AIX
IBM i with QSH OS400
HP-UX HP-UX
...
string sanitizer for filename
...ive characters
$filename = preg_replace(array(
// "file name.zip" becomes "file-name.zip"
'/ +/',
// "file___name.zip" becomes "file-name.zip"
'/_+/',
// "file---name.zip" becomes "file-name.zip"
'/-+/'
), '-', $filename);
$filename = pre...
tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...可以为每个队列申请一个中断号，然后设置中断亲和性，把该队列的中断映射到某个特定的cpu核心上， 分担了cpu的单核压力。
目前绝大多数网卡都支持该特性，并且该特性是本文其他优化方案的基础条件。
多队列网卡RSS特性
...