大约有 1,000 项符合查询结果(耗时:0.0080秒) [XML]

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列表显示框”中的列表选项点不动? - App Inventor 2 中文网 - 清泛IT社...

转会员Adonise提问: BLE设备列表显示在“列表显示框”中,测试时列表中的选项点不动? 建议可以先用排除法:新建一个项目,列表显示框加几个测试项,看能否点的动。 新项目手机点不动的话,换模拟器试试。便于找到...
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App Inventor 2内置块中列表逐个执行(列表如何遍历)? - App Inventor 2 ...

列表代码块中没有提供遍历的方法,遍历逻辑在控制代码块中,提供 2 种遍历方式:方法1:控制代码块 > 从列表循环 对于无需知道列表当前遍历的下标索引,用这种最好[hide][/hide]方法2:控制代码块 > 从范围循环 典型的使...
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AppInventor2列表显示框中列表项背景颜色可以定制吗? - App Inventor 2 中...

问:列表显示框中,能不能设置 奇数项背景颜色 是黄色  偶数项背景是红色?答:App Inventor 2 原生“列表显示框”组件只能设置一个整体的背景颜色,不能定制每个列表项的背景颜色。 要做到这一点,请使用高级拓展...
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App Inventor 2 列表排序,函数式编程轻松实现高级排序算法 · App Inventor 2 中文网

...索 App Inventor 2 列表排序,函数式编程轻松实现高级排序算法 基本数据类型(文本和数字)升序 基本数据类型(文本和数字)降序 复杂结构类型中...
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Dump a NumPy array into a csv file

Is there a way to dump a NumPy array into a CSV file? I have a 2D NumPy array and need to dump it in human-readable format. ...
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Read specific columns from a csv file with csv module?

I'm trying to parse through a csv file and extract the data from only specific columns. 11 Answers ...
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Creating a dictionary from a csv file?

I am trying to create a dictionary from a csv file. The first column of the csv file contains unique keys and the second column contains values. Each row of the csv file represents a unique key, value pair within the dictionary. I tried to use the csv.DictReader and csv.DictWriter classes, but I...
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CSV new-line character seen in unquoted field error

... It'll be good to see the csv file itself, but this might work for you, give it a try, replace: file_read = csv.reader(self.file) with: file_read = csv.reader(self.file, dialect=csv.excel_tab) Or, open a file with universal newline mode and pass...
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Parsing a CSV file using NodeJS

With nodejs I want to parse a .csv file of 10000 records and do some operation on each row. I tried using http://www.adaltas.com/projects/node-csv . I couldnt get this to pause at each row. This just reads through all the 10000 records. I need to do the following: ...
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Create a CSV File for a user in PHP

...n a MySQL database. I am sending the user a URL to get their data out as a CSV file. 19 Answers ...