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Java: random long number in 0
Random class has a method to generate random int in a given range. For example:
16 Answers
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How to get a pixel's x,y coordinate color from an image?
Is there any way to check if a selected(x,y) point of a PNG image is transparent?
4 Answers
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Is there a way to get the XPath in Google Chrome?
I have a webpage I want to use with YQL. But I need the XPath of a specific item. I can see it in the debug tools area for Google Chrome but I don't see a way to copy that XPath.
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How can I get this ASP.NET MVC SelectList to work?
...m
{
Selected = (c.CustomerID == invoice.CustomerID),
Text = c.Name,
Value = c.CustomerID.ToString()
};
At second glance I'm not sure I know what you are after...
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How can I make pandas dataframe column headers all lowercase?
...e this:
data.columns = map(str.lower, data.columns)
or
data.columns = [x.lower() for x in data.columns]
example:
>>> data = pd.DataFrame({'A':range(3), 'B':range(3,0,-1), 'C':list('abc')})
>>> data
A B C
0 0 3 a
1 1 2 b
2 2 1 c
>>> data.columns = map(s...
Javascript “Not a Constructor” Exception while creating objects
...ause Project is not a user-defined function / valid constructor.
function x(a,b,c){}
new x(1,2,3); // produces no errors
You've probably done something like this:
function Project(a,b,c) {}
Project = {}; // or possibly Project = new Project
new Project(1,2,3); ...
Check if two linked lists merge. If so, where?
...e but in the end they should be restored", and
we could iterate the lists exactly twice
the following algorithm would be the solution.
First, the numbers. Assume the first list is of length a+c and the second one is of length b+c, where c is the length of their common "tail" (after the mergepoin...
Necessary to add link tag for favicon.ico?
...a specific location, perhaps in the images folder or something alike. For example:
<link rel="icon" href="_/img/favicon.png">
This diferent location may even be a CDN, just like SO seems to do with <link rel="shortcut icon" href="http://cdn.sstatic.net/stackoverflow/img/favicon.ico">....
Show percent % instead of counts in charts of categorical variables
...is was answered there have been some meaningful changes to the ggplot syntax. Summing up the discussion in the comments above:
require(ggplot2)
require(scales)
p <- ggplot(mydataf, aes(x = foo)) +
geom_bar(aes(y = (..count..)/sum(..count..))) +
## version 3.0.0
sc...
When is null or undefined used in JavaScript? [duplicate]
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The DOM methods getElementById(), nextSibling(), childNodes[n], parentNode() and so on return null (defined but having no value) when the call does not return a node object.
The property is defined, but the object it refers to does not exist.
This is one of ...