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微博为什么限制140字(附短信70字限制考) - 闲聊区 - 清泛IT社区,为创新赋能!
...的专家,或者这位新浪微博的副主编(原来新浪微博是有编辑的啊),还有各种论坛、百度知道提问等等,都不足以让人信服,考据癖没能得到满足,只好自己来考据一番。twitter说We like to keep it short and sweet! It also just so happens th...
如何抓住痛点做出让用户尖叫的产品 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...察觉的情况下,体验到产品的优化改进。比如在微信(iOS版,Android版没有试用,不是很确定,理论上体验是会一致的)中有这样一个功能,当你做了手机屏幕截图的操作后,打开微信的任一聊天窗口,选择“+”号发送其他内容...
What is the “assert” function?
...ndard draft
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf
19.3 Assertions
1 The header <cassert>, described in (Table 42), provides a macro for documenting C ++ program assertions
and a mechanism for disabling the assertion checks.
2 The contents are the same a...
How do I put two increment statements in a C++ 'for' loop?
... Ok. From open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2857.pdf section 6.5.3 the last part is an "expression". (Although 1.6 #2 defines an "expression-list" as a "list of expressions separated by commas", this construct does not appear in 6.5.3.). This means that when we write "++i,+...
“二孩”遇上母婴产业 创业者必读的数据干货 - 资讯 - 清泛网 - 专注C/C++...
...使用、投融资、用户画像和发展趋势的数据干货,钛媒体编辑整理如下:
母婴类应用渗透率仅为6.3%,增长空间巨大
目前,母婴类应用覆盖0.8亿台移动设备,移动端渗透率仅6.3%,行业仍处于发展初期,有较大的用户增长空间。...
Why are C character literals ints instead of chars?
..."high level assembler".
(See 6.3.3 on page 6-25 of http://www.dmv.net/dec/pdf/macro.pdf)
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How can we make xkcd style graphs?
... +
theme(text=element_text(size=16, family="xkcd"))
ggsave("xkcd_ggplot.pdf", plot=p, width=4, height=4)
## needed for Windows:
## Sys.setenv(R_GSCMD = "C:/Program Files/gs/gs9.05/bin/gswin32c.exe")
embed_fonts("xkcd_ggplot.pdf")
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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...较700多次比较时,就算使用我们之前精准度高计算很慢的编辑距离也可以搞定。当然如果觉得慢了,也可以使用余弦夹角等效率稍微高点的相似度算法。
参考:
我的数学之美系列二 —— simhash与重复信息识别
原创文章,...
FAT32系统中长文件名的存储 - C/C++ - 清泛网 - 专注C/C++及内核技术
...持长文件名的OS或程序则会以长文件名为显式项来记录和编辑,并隐藏起短文件名。
当创建一个长文件名文件时,系统会自动加上对应的短文件名,其一般有的原则:
(1)、取长文件名的前6个字符加上"~1"形成短文件名,...
Find running median from a stream of integers
....biz/2013/09/16/… and the paper that it refers to is here: arxiv.org/pdf/1407.1121v1.pdf This is called "Frugal Streaming"
– Paul Chernoch
Aug 24 '15 at 16:23
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