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Algorithm to compare two images
... version of the other, therefore scaling the resolution down might provide more accurate results.
Consider scanning various prospective areas of the image that could represent zoomed portions of the image and various positions and rotations. It starts getting tricky if one of the images are a skew...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
... edited to contain this phrase:
As the new string-formatting syntax is more flexible and handles tuples and dictionaries naturally, it is recommended for new code. However, there are no current plans to deprecate printf-style formatting.
(Emphasis mine.)
This phrase was removed later, in comm...
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign
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'AND' vs '&&' as operator
...y people thinking they are exactly the same thing and the answers here are more testimonials.
– Marco Demaio
May 24 '11 at 15:44
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Using ls to list directories and their total sizes
... du --max-depth 1 only shows file/folder sizes of 1 deep in the tree, no more clutter and easy to find large folders within a folder.
– CousinCocaine
May 5 '14 at 19:27
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When should I mock?
... This answer is too radical. Unit tests can and should exercise more than a single method, as long as it all belongs to the same cohesive unit. Doing otherwise would require way too much mocking/faking, leading to complicated and fragile tests. Only the dependencies that don't really belo...
How can I unit test Arduino code?
...to tell you anything about the quality of your own work. Hence, it is far more valuable and efficient to write unit tests that do not run on the target device (or emulator).
Frequent testing on your target hardware has a painfully slow cycle:
Tweak your code
Compile and upload to Arduino device
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When to use window.opener / window.parent / window.top
...t;
window.top refers to the top-most window from a window nested in one or more layers of <iframe> sub-windows
Those will be null (or maybe undefined) when they're not relevant to the referring window's situation. ("Referring window" means the window in whose context the JavaScript code is ...
How can I disable a button on a jQuery UI dialog?
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