You want to overload `==`, which automatically defines `isequal`. You may also want to overlad `isless`, which then automatically defines `<`, `>`, `<=`, `>=`.
-erik On Fri, Aug 21, 2015 at 9:43 AM, Stefan Karpinski <ste...@karpinski.org> wrote: > These days you generally want to overload == rather than isequal. > > On Fri, Aug 21, 2015 at 9:24 AM, Sisyphuss <zhengwend...@gmail.com> wrote: > >> They are two different operators. >> import Base.== >> >> type inty >> insideint :: Int >> end >> ==(a :: inty, b :: Int) = a.insideint == b >> >> inty(5) == 5 >> >> >> >> On Friday, August 21, 2015 at 3:10:01 PM UTC+2, Dawid Crivelli wrote: >>> >>> >>> How do you define the `==` operator for a new type? >>> >>> If I try and define the `isequal` operator, that definition does not >>> apply to '==': >>> >>> import Base.isequal >>> >>> type inty >>> insideint :: Int >>> end >>> isequal(a :: inty, b :: Int) = a.insideint == b >>> >>> inty(5) == 5 # false on Julia Version 0.4.0-dev+6858, Commit >>> dc2be6f (2015-08-20 16:45 UTC) >>> isequal(inty(5), 5) # true >>> >>> > -- Erik Schnetter <schnet...@gmail.com> http://www.perimeterinstitute.ca/personal/eschnetter/
