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扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网
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扩展App I...
Big O, how do you calculate/approximate it?
...ns in your algorithm.
Here are some of the most common cases, lifted from http://en.wikipedia.org/wiki/Big_O_notation#Orders_of_common_functions:
O(1) - Determining if a number is even or odd; using a constant-size lookup table or hash table
O(logn) - Finding an item in a sorted array with a bina...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...会重视大数据。
二、政策好,政府支持力度大
根据gov.cn9月6日消息,国务院公开发布《国务院关于印发促进大数据发展行动纲要的通知》,纲要里明确的说明,中国将在2018年会建成政府的大数据平台。相比之下,我们敬爱的...
Break a previous commit into multiple commits
...oks like the following (well, I use git log --pretty=oneline --pretty="%h %cn %cr ---- %s"
bfb8e46 Rose Perrone 4 seconds ago ---- three
2b613bc Rose Perrone 14 seconds ago ---- two
9aac58f Rose Perrone 24 seconds ago ---- one
Let's say we want to split the second commit, two.
git rebase --inter...
乐高机器人®组件 · App Inventor 2 中文网
... 隐私策略和使用条款 技术支持 service@fun123.cn
Are there pronounceable names for common Haskell operators? [closed]
...The Whetstone of Witte - Robert Recorde (1557)
-- proposed namings
-- src http://stackoverflow.com/a/7747115/1091457
t ">>=" = "bind"
t "*>" = "then"
t "->" = "to" -- a -> b: a to b
t "<$" = "map-replace by" -- 0 <$ f: "f map-replace by 0"
t "<*&g...
Handling JSON Post Request in Go
...
Please use json.Decoder instead of json.Unmarshal.
func test(rw http.ResponseWriter, req *http.Request) {
decoder := json.NewDecoder(req.Body)
var t test_struct
err := decoder.Decode(&t)
if err != nil {
panic(err)
}
log.Println(t.Test)
}
...
What is a good regular expression to match a URL? [duplicate]
...
Regex if you want to ensure URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@...