32 lines
731 B
JavaScript
32 lines
731 B
JavaScript
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// Matrix operations.
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// **Matrix** is a utility class to help with matrix operations. A
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// matrix is implemented as an n-element array. Data is stored in row-major
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// order.
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export copy = (matrix) => matrix.map((row) => [...row])
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export equals = (l, r) ->
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return false unless l.length is r.length
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return true if l.length is 0
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return false unless l[0].length is r[0].length
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for lrow, y in l
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rrow = r[y]
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for lindex, x in lrow
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unless lindex is rrow[x]
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return false
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return true
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export size = (matrix) ->
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return 0 if 0 is matrix.length
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return matrix.length * matrix[0].length
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export sizeVector = (matrix) ->
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return [0, 0] if 0 is matrix.length
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return [matrix[0].length, matrix.length]
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