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The new macro
@functorize(f)
turns a functionf
into a functor object ifthere is one in Base corresponding to
f
. E.g.@functorize(+)
yieldsBase.AddFun()
;@functorize(<)
yields<
in Julia 0.3, butBase.LessFun()
in 0.4.
While at present this would more naturally be achieved by providing
LessFun
etc. in Compat, this PR is in anticipation of JuliaLang/julia#15804, which will deprecate all functors.Note that the version check in this PR can only be finalized once JuliaLang/julia#15804 has been merged.