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vecdot

vecdot(x, y)

For any iterable containers x and y (including arrays of any dimension) of numbers (or any element type for which dot is defined), compute the Euclidean dot product (the sum of dot(x[i],y[i])) as if they were vectors.

Examples

1. Compute the dot product of two arrays:

   julia> x = [1, 2, 3];
   julia> y = [4, 5, 6];
   julia> vecdot(x, y)
   32

   This example calculates the dot product of the arrays x and y.

2. Calculate the dot product of two matrices:

   julia> A = [1 2; 3 4];
   julia> B = [5 6; 7 8];
   julia> vecdot(A, B)
   70

   It computes the dot product of the matrices A and B.

3. Compute dot product of complex vectors:

   julia> x = [1+2im, 3+4im];
   julia> y = [5+6im, 7+8im];
   julia> vecdot(x, y)
   70 + 100im

   The function can handle complex numbers and compute the dot product accordingly.

Common mistake example:

julia> x = [1, 2, 3];
julia> y = [4, 5];
julia> vecdot(x, y)
ERROR: DimensionMismatch("dot product arguments have lengths 3 and 2")

In this example, the dimensions of x and y are not compatible, causing a DimensionMismatch error. Make sure that the dimensions of the input arrays are compatible for dot product calculation.

See Also

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