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How to remove convexity defects in a Sudoku square?
... pixel with the result of a closing operation:
src = ColorConvert[Import["http://davemark.com/images/sudoku.jpg"], "Grayscale"];
white = Closing[src, DiskMatrix[5]];
srcAdjusted = Image[ImageData[src]/ImageData[white]]
The next step is to find the sudoku area, so I can ignore (mask out) the bac...
efficient circular buffer?
...hape (n,) or (n,1)?
In this benchmark, deque is 448ms. Numpy.roll is 29ms
http://scimusing.wordpress.com/2013/10/25/ring-buffers-in-pythonnumpy/
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Difference between `set`, `setq`, and `setf` in Common Lisp?
...the other hand, is subtle indeed -- it's like an "indirection". I suggest http://www.n-a-n-o.com/lisp/cmucl-tutorials/LISP-tutorial-16.html as a better way to get started understanding it than any answer here can give... in short, though, setf takes the first argument as a "reference", so that e.g....
Reload Flask app when template file changes
... extra_files.append(filename)
app.run(extra_files=extra_files)
See here: http://werkzeug.pocoo.org/docs/0.10/serving/?highlight=run_simple#werkzeug.serving.run_simple
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Generate a random point within a circle (uniformly)
...) * sin(angle)
This will give you uniform point distribution on a disk.
http://mathworld.wolfram.com/DiskPointPicking.html
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How to force vim to syntax-highlight a file as html?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
JavaScript: location.href to open in new window/tab?
...
window.open(
'https://support.wwf.org.uk/earth_hour/index.php?type=individual',
'_blank' // <- This is what makes it open in a new window.
);
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On a CSS hover event, can I change another div's styling? [duplicate]
...but only if #b is after #a in the HTML.
If #b comes immediately after #a: http://jsfiddle.net/u7tYE/
#a:hover + #b {
background: #ccc
}
<div id="a">Div A</div>
<div id="b">Div B</div>
That's using the adjacent sibling combinator (+).
If there are other elements betw...
git rebase, keeping track of 'local' and 'remote'
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Why can't I initialize non-const static member or static array in class?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...