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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...：避免产生“直写型”（write-only）的代码。
代码被阅读的次数远远大于它被编写的次数。
第48条：总是包含（#include）正确的头文件。
几乎所有的标准STL容器都被声明在与之同名的头文件中。
除了４个STL算法外，其...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
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低功耗蓝牙，也称为蓝牙LE 或简称 BLE，是一种类似于经典蓝牙的新通信协议，不同之处在于它旨在消耗更少的功耗和成本，同时保持同...
NumPy array initialization (fill with identical values)
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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...
How can I get the last 7 characters of a PHP string?
How would I go about grabbing the last 7 characters of the string below?
7 Answers
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