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Memoization in Haskell?
... f does what you mean for small values of f by calling, for example: fix f 123 = 144
We could memoize this by defining:
f_list :: [Int]
f_list = map (f faster_f) [0..]
faster_f :: Int -> Int
faster_f n = f_list !! n
That performs passably well, and replaces what was going to take O(n^3) time...
Extract elements of list at odd positions
...it be enumerate(L) instead of enumerate(items) ?
– ab123
May 24 '18 at 5:38
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Fastest way to implode an associative array with keys
...ll on other data types too)
$str = json_encode($arr);
//output...
[{"id":"123","name":"Ice"},{"id":"234","name":"Cake"},{"id":"345","name":"Pie"}]
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Adjusting the Xcode iPhone simulator scale and size [duplicate]
...answered Sep 4 '13 at 6:39
kumar123kumar123
73166 silver badges2121 bronze badges
How to open a web page from my application?
...ered Apr 23 '13 at 12:19
mr.baby123mr.baby123
1,7841919 silver badges1212 bronze badges
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Can a relative sitemap url be used in a robots.txt?
...nswered Aug 23 '19 at 6:30
cstpl123cstpl123
1722 bronze badges
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Windows下MySql安装配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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4.赋权限:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '123' WITH GRANT OPTION;
(注:%用于其他主机连接,localhost用于本机连接)MySql 安装配置
MySql安装配置 - 爬虫/数据库 - 清泛IT社区,为创新赋能!
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4.赋权限:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123' WITH GRANT OPTION;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '123' WITH GRANT OPTION;
(注:%用于其他主机连接,localhost用于本机连接)
css让background-color在background-img的上边显示,且背景图片居中 - 更多...
...ass="content" style="max-height:700px; background:green url(https: www fun123 cn css让background-color在background-img的上边显示,且背景图片居中的代码如下:
<div class="content" style="max-height:700px;
background:green url(https://www.fun123.cn/img/itso.png) no-repeat ...
App Inventor 2 中文网已全面升级https安全通道,数据安全有保障! - App I...
经过一段时间的努力,App Inventor 2 中文网(fun123.cn)已全部升级https安全通道,以保护用户的访问及数据安全,值得注意的是MIT官方目前仍是http非安全通道。
App Inventor 2 中文网(fun123.cn)安全通道
MIT官方目前非安全通道...