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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
... I think these are the questions you need to answer before trying anything more advanced. Baby steps!
– karlphillip
Jan 25 '12 at 12:40
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How can I check the extension of a file?
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ext = m.rpartition('.')[-1]; if ext == will be much more efficient
– volcano
Jan 6 '14 at 17:03
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Bootstrap 3 Glyphicons are not working
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Convert file: Uri to File in Android
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How do you get the footer to stay at the bottom of a Web page?
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What is the PostgreSQL equivalent for ISNULL()
...CT CASE WHEN field IS NULL THEN 'Empty' ELSE field END AS field_alias
Or more idiomatic:
SELECT coalesce(field, 'Empty') AS field_alias
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What is the purpose of the “final” keyword in C++11 for functions?
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How can I initialize a String array with length 0 in Java?
... @Thomas: I take your point, but for this particular case I prefer the more explicit form. It's clearer to me that it means "I want a string array with 0 elements" rather than "I want an array with this content - which is empty". Just personal preference I guess.
– Jon Skee...
Converting JSON data to Java object
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