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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...型都都要在该窗口内编码实现。下面举两个例子。
例1.1 如何在LINGO中求解如下的LP问题：
在模型窗口中输入如下代码：
min=2*x1+3*x2;
x1+x2>=350;
x1>=100;
2*x1+x2<=600;
然后点击工具条上的按钮 即可。
例1.2 使用LINGO软件计算6个...
HTML5 Email Validation
It is said "With HTML5, we need no more js or a server side code to check if the user's input is a valid email or url address"
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How to set HTTP header to UTF-8 using PHP which is valid in W3C validator?
...her part of the content type separately (for example, you have some text/plain pages, and some text/html pages, but they are all UTF8.) Is my understanding correct?
– Eric Seastrand
Jan 29 '15 at 15:55
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...综合考虑各种因素（是否满足高并发高性能，Session保持如何解决，负载均衡的算法如何，支持压缩，缓存的内存消耗）；下面基于几种常用的负载均衡软件做个介绍。
LVS，工作在4层，Linux实现的高性能高并发、可伸缩性、可靠...
Open a new tab in gnome-terminal using command line [closed]
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You can also have each tab run a set command.
gnome-terminal --tab -e "tail -f somefile" --tab -e "some_other_command"
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Are there any suggestions for developing a C# coding standards / best practices document? [closed]
I'm a recent AI graduate (circa 2 years) working for a modest operation. It has fallen to me (primarily as I'm the first 'adopter' in the department) to create a basic (read useful?) C# coding standards document.
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How to paste in a new line with vim?
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@AI: Using the ',p' (',' is mapped as my <Leader>) is the best solution in my opinion. YOu even provided an easy to use function. :) Great!
– Somebody still uses you MS-DOS
May 25 '...
How can I list all tags in my Git repository by the date they were created?
... easy reference: git log --tags --simplify-by-decoration --pretty="format:%ai %d"
– Gilead
Oct 24 '12 at 13:02
5
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Zip lists in Python
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When you zip() together three lists containing 20 elements each, the result has twenty elements. Each element is a three-tuple.
See for yourself:
In [1]: a = b = c = range(20)
In [2]: zip(a, b, c)
Out[2]:
[(0, 0, 0),
(1, 1, 1),
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(17, 17, 17),
(18, 18, 18...
Statistics: combinations in Python
...ersions of scipy). When exact is False, it uses the gammaln function to obtain good precision without taking much time. In the exact case it returns an arbitrary-precision integer, which might take a long time to compute.
sh...