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APP INVENTOR硬件交互学习教程10——多个虚拟界面实现 - 创客硬件开发 - 清...
...辑
通过配置垂直布局实现两个虚拟界面切换。
1.界面设计
增加了两个垂直布局,作为界面1和界面2的容器存放每个页面的内容;增加导航布局,水平布局增加两个按钮,用于切面切换。
2.逻辑设计
定义三个过程,用来...
APP INVENTOR硬件交互学习教程11——滑条控制舵机 - 创客硬件开发 - 清泛IT...
这节我们通过滑条控件控制舵机动作。
1.界面设计
增加滑条控件和标签控件,滑条控制舵机动作,标签显示滑条数值。
2.逻辑设计
增加当滑条改变时,显示和发送指令给下位机
3.工程参考
App Inventor 2 计时器(Clock)详细用法示例 · App Inventor 2 中文网
...用法示例
计时器在界面设计中的哪里?
计时器怎么启动?
怎么确定计时器执行没?
怎么获取手机当前时间?
格式化时间,上面函数返回的当前时刻格式化成文本:
24小时格式怎么写?
...
How to understand Locality Sensitive Hashing?
...er 3 - Finding Similar Items
http://infolab.stanford.edu/~ullman/mmds/ch3a.pdf
Also I recommend the below slide:
http://www.cs.jhu.edu/%7Evandurme/papers/VanDurmeLallACL10-slides.pdf .
The example in the slide helps me a lot in understanding the hashing for cosine similarity.
I borrow two slides f...
数据挖掘——分词入门 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...int(matchWord + " ");
} else {
//从当前词开始往后都没有能够匹配上的词,则按照单字切分的原则切分
System.out.print(str.substring(j, ++j) + " ");
}
matchWord = "";
}
}
}
输出结...
How to check if a string contains an element from a list in Python
...
extensionsToCheck = ('.pdf', '.doc', '.xls')
'test.doc'.endswith(extensionsToCheck) # returns True
'test.jpg'.endswith(extensionsToCheck) # returns False
share
...
The Definitive C Book Guide and List
...the draft C11 standard.
The new C standard - an annotated reference (Free PDF) - Derek M. Jones (2009). The "new standard" referred to is the old C99 standard rather than C11.
Rationale for C99 Standard.
Beginner
C Programming: A Modern Approach (2nd Edition) - K. N. King (2008). A good book...
大单融资后,MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术
...学校的教学能力。”
在MOOC逐渐受到关注的同时,资本也开始发力。2014年12月,果壳网与学堂在线分别获得C轮和A轮融资。据了解,自B轮起,果壳网便开始将资金投入MOOC社区产品中,并令它迅速成为了互联网企业MOOC的代表性产...
Calculate MD5 checksum for a file
I'm using iTextSharp to read the text from a PDF file. However, there are times I cannot extract text, because the PDF file is only containing images. I download the same PDF files everyday, and I want to see if the PDF has been modified. If the text and modification date cannot be obtained, is a ...
How do I tar a directory of files and folders without including the directory itself?
... "%P\n" -type f -o -type l -o -type d
> textfile.txt
> documentation.pdf
> subfolder2
> subfolder
> subfolder/.gitignore
For example if you want to filter PDF files, add ! -name '*.pdf'
$ find /my/dir/ -printf "%P\n" -type f ! -name '*.pdf' -o -type l -o -type d
> textfile.txt
&...
