If functions are comparable you have to be very
careful in defining /when/ they are equal.
func f(x int)int {return x+2}
func g(x int)int {return x+2}
func h(x int)int {return x+1+1}
Are f and g equal? f and h?
func k() func (int)int { return func(int x)int {x + 1}}
Are k() and k() equal? f and k()?
var x = 17
func l() func(int)int {y := 2; return func(int x)int {x +y}}
l() and f? and k()? and l()?
Disallowing equality tests on functions allows the
compiler to freely re-use code (or not).
Chris
--
Chris "allusive" Dollin
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