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How can I determine whether a 2D Point is within a Polygon?
I'm trying to create a fast 2D point inside polygon algorithm, for use in hit-testing (e.g. Polygon.contains(p:Point) ). Suggestions for effective techniques would be appreciated.
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Tools to make CSS sprites? [closed]
Are there any good tools to make css sprites?
21 Answers
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Throw keyword in function's signature
What is the technical reason why it is considered bad practice to use the C++ throw keyword in a function signature?
7 An...
How to highlight cell if value duplicate in same column for google spreadsheet?
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Try this:
Select the whole column
Click Format
Click Conditional formatting
Click Add another rule (or edit the existing/default one)
Set Format cells if to: Custom formula is
Set value to: =countif(A:A,A1)>1 (or change A to your chosen column)
Set the formatting style.
Ensure t...
chrome undo the action of “prevent this page from creating additional dialogs”
...re-enable alerting for debugging. Of course I can close the tab and reload it but Is there a better way?
7 Answers
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Haskell, Lisp, and verbosity [closed]
...and some flavor of Lisp, I'm curious how "pleasant" (to use a horrid term) it is to write code in Haskell vs. Lisp.
8 Answe...
Can't use method return value in write context
I would think the following piece of code should work, but it doesn't (Edited: Now works in PHP 5.5+) :
8 Answers
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JavaScript check if variable exists (is defined/initialized)
Which method of checking if a variable has been initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
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How do you configure an OpenFileDialog to select folders?
...to accept only folders. Ever since I've seen this I've wanted to know how it's done. I am aware of the FolderBrowserDialog, but I've never really liked that dialog. It starts too small and doesn't let me take advantage of being able to type a path.
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Recommended way of making React component/div draggable
I want to make a draggable (that is, repositionable by mouse) React component, which seems to necessarily involve global state and scattered event handlers. I can do it the dirty way, with a global variable in my JS file, and could probably even wrap it in a nice closure interface, but I want to kno...