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matplotlib colorbar for scatter
I'm working with data that has the data has 3 plotting parameters: x,y,c. How do you create a custom color value for a scatter plot?
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C++ auto keyword. Why is it magic?
...urpose. But just recently, I encountered code that used it as a type name in and of itself. Out of curiosity I tried it, and it assumes the type of whatever I happen to assign to it!
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Enumerable.Empty() equivalent for IQueryable
When a method returns IEnumerable<T> and I do not have anything to return, we can use Enumerable.Empty<T>() .
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Can I pass an array as arguments to a method with variable arguments in Java?
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The underlying type of a variadic method function(Object... args) is function(Object[] args). Sun added varargs in this manner to preserve backwards compatibility.
So you should just be able to prepend extraVar to args and call String....
What's the difference between using CGFloat and float?
...f I get a senseless "performance hit" with this. CGFloat seems to be something "heavier" than float, right? At which points should I use CGFloat, and what makes really the difference?
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How to draw a line in android
Can anybody tell how to draw a line in Android, perhaps with an example?
15 Answers
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What is lazy loading in Hibernate?
What is lazy loading in Java? I don't understand the process. Can anybody help me to understand the process of lazy loading?
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Understanding Canvas and Surface concepts
I'm struggling to understand the process of drawing to SurfaceView and therefore the whole Surface / Canvas / Bitmap system, which is used in Android.
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How to shrink/purge ibdata1 file in MySQL
I am using MySQL in localhost as a "query tool" for performing statistics in R, that is, everytime I run a R script, I create a new database (A), create a new table (B), import the data into B, submit a query to get what I need, and then I drop B and drop A.
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数据存储组件 · App Inventor 2 中文网
...程序。兼容模式可用于旧的应用程序（新约束之前）Android 上的文件访问。
行数据
获取当前已加载的源文件的行数据列表。
源文件
设置数据解析的源文件，然后异步解析文件。结果存储在 列数据 、行数据 及 列名列表 ...