大约有 15,000 项符合查询结果（耗时：0.0351秒） [XML]
Can I have onScrollListener for a ScrollView?
I am using a HorizontalScrollView in a layout and I need to identify the user have reached the start and end point of the scroll.
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图表组件 · App Inventor 2 中文网
...如 描述、启用网格。
图表的入门教程请查看《【App Inventor 2 数据可视化】使用柱状图和饼图收集数据》。
属性
背景颜色
设置图表的背景颜色，使用RGBA数值表示。
描述
指定图表内描述标签显示的文本。指定空字符串 ...
JSON.net: how to deserialize without using the default constructor?
I have a class that has a default constructor and also an overloaded constructor that takes in a set of parameters. These parameters match to fields on the object and are assigned on construction. At this point i need the default constructor for other purposes so i would like to keep it if i can. ...
Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir
I'm working on a CMS that fetches a user's profile image from their Facebook URL (that is, http://facebook.com/users_unique_url ). How can I accomplish this? Is there a Faceboook API call that fetches a user's profile image URL without the user needing to Allow the application?
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Matplotlib (pyplot) savefig outputs blank image
I am trying to save plots I make using matplotlib; however, the images are saving blank.
5 Answers
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Counting DISTINCT over multiple columns
Is there a better way of doing a query like this:
19 Answers
19
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Determine if two rectangles overlap each other?
I am trying to write a C++ program that takes the following inputs from the user to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectangles will exist parallel to the x and the y axis, that is all of their edges will have slopes of 0 or infinity.
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JavaScript: Check if mouse button down?
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Regarding Pax' solution: it doesn't work if user clicks more than one button intentionally or accidentally. Don't ask me how I know :-(.
The correct code should be like that:
var mouseDown = 0;
document.body.onmousedown = fun...
How do you count the number of occurrences of a certain substring in a SQL varchar?
I have a column that has values formatted like a,b,c,d. Is there a way to count the number of commas in that value in T-SQL?
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Why is DarkGray lighter than Gray?
Simple curiosity here, tinged with some practical concerns because I get caught out by this occasionally.
3 Answers
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