the book of learning opencv3 said that m0.push_back( s ) is used to extend an m × 1 matrix and insert the singleton s at the end while m0.push_back( m1 ) is used to extend an m × n by k rows and copy m1 into those rows; Cloud you tell me what's the different between s and m1 in the term of class?Does the singleton means the a single number?
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