大约有 2,500 项符合查询结果(耗时:0.0128秒) [XML]

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Stock ticker symbol lookup API [closed]

...ymbols, names, quotes, and all sorts of other data. Data is returned as a .CSV so you can request multiple symbols in one query. So if you send: http://finance.yahoo.com/d/quotes.csv?s=MSFT+F+ATT&f=sn You'll get back something like: "MSFT","Microsoft Corp" "F","FORD MOTOR CO" "ATT","AT&...
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显示列表 · App Inventor 2 中文网

... 将列表序列化为标签 使用列表转 csv 行 使用 while 循环 代码块如何工作 使用”从范围循环“ 使用”从列表循环“ « 返回首页 我们经常会使用列表来存储数据。例如,以下列表存储电话...
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AppInventor如何实现通过扫二维码导入表格数据 - App Inventor 2 拓展 - 清...

...上面条码组件的事件中获取。 3、访问远程url获取表格csv数据: 使用Web客户端组件访问url获取数据。数据格式建议采用csv(逗号分隔)格式。 4、解析数据并展示: 推荐使用TableView拓展展示csv表格数据。
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Compress files while reading data from STDIN

...ad data as input and redirect the compressed to output file i.e. cat test.csv | gzip > test.csv.gz cat test.csv will send the data as stdout and using pipe-sign gzip will read that data as stdin. Make sure to redirect the gzip output to some file as compressed data will not be written to the t...
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How to find where a method is defined at runtime?

...#crime> If you're on Ruby 1.9+, you can use source_location require 'csv' p CSV.new('string').method(:flock) # => #<Method: CSV#flock> CSV.new('string').method(:flock).source_location # => ["/path/to/ruby/1.9.2-p290/lib/ruby/1.9.1/forwardable.rb", 180] Note that this won't work...
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Principal component analysis in Python

.............................. if __name__ == "__main__": import sys csv = "iris4.csv" # wikipedia Iris_flower_data_set # 5.1,3.5,1.4,0.2 # ,Iris-setosa ... N = 1000 K = 20 fraction = .90 seed = 1 exec "\n".join( sys.argv[1:] ) # N= ... np.random.seed(seed) ...
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Warning message: In `…` : invalid factor level, NA generated

... If you are reading directly from CSV file then do like this. myDataFrame <- read.csv("path/to/file.csv", header = TRUE, stringsAsFactors = FALSE) share | ...
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AfxIsValidAddress 测试内存地址 - C/C++ - 清泛网 - 专注C/C++及内核技术

...d writing (TRUE) or just reading (FALSE). 确定被测试内存是读写形式(真)还是只读形式(假)。 Return Value In debug builds, nonzero if the specified memory block is contained entirely within the program's memory space; otherwise 0. 在调试版,如果...
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什么是 Ringbuffer ? - C/C++ - 清泛网 - 专注C/C++及内核技术

...介绍如何避免ringbuffer产生重叠,以及如何对ringbuffer进行读写操作。你可能注意到了我将ringbuffer和链表那样的数据结构进行比较,因为我并认为链表是实际问题的标准答案。 当你将Disruptor和基于 队列之类的实现进行比较时,事...
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XmlNode与XmlElement的区别总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...拥有众多对Attribute的操作方法,可以方便的对其属性进行读写操作(XmlNode也可以通过Attributes属性获取属性列表)。 5、在网上看到有人这么评论这两个类的区别:XmlNode包含子节点,XmlElement只包含属性及其本身不含有子节点。...