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Logging best practices [closed]
...will notice the file, and then it can take action, e.g. compress it (e.g. 7zip) and email it or otherwise make available.
Many systems these days incorporate automated reporting of failures to a central server (after checking with users, e.g. for privacy reasons).
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Q: What tools to you u...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
...种高级语言，在C源程序中，不必为堆栈段、数据段和代码段的定义而担心，编译器会把程序中的字符串和语句代码分别放到它们该去的地方，程序开始执行的时候也会自己找到main()函数。而汇编是低级语言，必须为所有的东西...
NumPy array initialization (fill with identical values)
...
7 Answers
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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...mael Ripoll for his suggestions and reviews
*
* Copyright (C) 2008, 2007, 2006, 2005, 2004
*
* This code is released using a dual license strategy: GPL/LGPL
* You can choose the licence that better fits your requirements.
*
* Released under the terms of the GNU General Public License V...
Get the week start date and week end date from week number
...(dd, -(DATEPART(dw, WeddingDate)-1), WeddingDate) [WeekStart]
DATEADD(dd, 7-(DATEPART(dw, WeddingDate)), WeddingDate) [WeekEnd]
You probably also want to look at stripping off the time from the date as well though.
share
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Expand a random range from 1–5 to 1–7
...1 to 5, write a function which produces a random integer in the range 1 to 7.
78 Answers
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Datetime - Get next tuesday
... if it's already Tuesday":
DateTime today = DateTime.Today;
// The (... + 7) % 7 ensures we end up with a value in the range [0, 6]
int daysUntilTuesday = ((int) DayOfWeek.Tuesday - (int) today.DayOfWeek + 7) % 7;
DateTime nextTuesday = today.AddDays(daysUntilTuesday);
If you want to give "a week...
Regular expression that matches valid IPv6 addresses
...of rfc5952)
link-local IPv6 addresses with zone index (section 11 of rfc4007)
IPv4-Embedded IPv6 Address (section 2 of rfc6052)
IPv4-mapped IPv6 addresses (section 2.1 of rfc2765)
IPv4-translated addresses (section 2.1 of rfc2765)
IPv6 Regular Expression:
(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4...
Split a vector into chunks in R
...nk all you need is seq_along(), split() and ceiling():
> d <- rpois(73,5)
> d
[1] 3 1 11 4 1 2 3 2 4 10 10 2 7 4 6 6 2 1 1 2 3 8 3 10 7 4
[27] 3 4 4 1 1 7 2 4 6 0 5 7 4 6 8 4 7 12 4 6 8 4 2 7 6 5
[53] 4 5 4 5 5 8 7 7 7 6 2 4 3 3...