if the Julia syntax was actually x in y, I'd have less of an objection, but while it looks like a function call, the message receiver should be the first argument.
On Sunday, January 11, 2015 at 1:10:28 PM UTC-8, Jake Bolewski wrote: > > `in` is most often used with infix notation (ex. 1 in [1,2,3])? > > On Sunday, January 11, 2015 at 4:00:37 PM UTC-5, Michael Landis wrote: >> >> Most Julia built-ins are defined so that the first argument is the >> (Smalltalk style) message receiver, but in(x,y) reverses the apparent >> standard, testing whether x is in y (the message receiver). >> >> append(x,y) appends y to x (the message receiver); >> push(x,y) pushes y onto x (the message receiver); >> in(x,y) should test whether y is in x, not the reverse. >> >> IMO, defeating orthogonality is a mistake. What's the justification for >> 'in()' violating the usual message receiver semantics? >> >
