On Tue, Apr 5, 2016 at 11:23 AM, Didier Verna <did...@didierverna.net> wrote: > > I understand that some operators have elementwise versions, when > prefixed with a dot. I think the manual is missing some dots, like in > this paragraph, right ? > > "The operator < is intended for array objects; the operation A .< B is > valid only if A and B have the same dimensions. The operator returns an > array with boolean entries and with the same dimensions as A and B. Such > operators are called elementwise; Julia offers a suite of elementwise > operators: *, +, etc." > > Also, is there a true mechanism for elementwise'ing operators ? Or are > those just a collection of built-ins following the same naming > convention ?
The true mechanism is the `map` function. You could define ```Julia (.<)(arrays...) = map(.<, arrays...) ``` (but the actual implementation might look different). -erik -- Erik Schnetter <schnet...@gmail.com> http://www.perimeterinstitute.ca/personal/eschnetter/
