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jlperla
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Aug 28, 2018
rst_files/linear_algebra.rst
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| .. code-block:: julia | ||
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| sum(x .* y) # Gives the same result | ||
| sum(i * j for (i, j) ∈ zip(x, y)) # Gives the same result |
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This is way too verbose. I would rather have an unnecessary allocation then something so complicated.
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sum(*, zip(x, y)) # errors out
but this works
sum(prod, zip(x, y))
jlperla
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Aug 28, 2018
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| sqrt(sum(abs2, x)) # Gives the same result |
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I think that leaving both of these examples in there is probably a good idea.
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I used sum(_ -> _^2, x) and other variants throughout the lectures to introduce a new convenient function.
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