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// Example using pointers to member functions
package main
import "fmt"
import . "./member_pointer"
func check(what string, expected float64, actual float64) {
if expected != actual {
panic(fmt.Sprintf("Failed: %s Expected: %f Actual; %f", what, expected, actual))
}
}
func main() {
// Get the pointers
area_pt := Areapt()
perim_pt := Perimeterpt()
// Create some objects
s := NewSquare(10)
// Do some calculations
check("Square area ", 100.0, Do_op(s, area_pt))
check("Square perim", 40.0, Do_op(s, perim_pt))
_ = GetAreavar()
_ = GetPerimetervar()
// Try the variables
check("Square area ", 100.0, Do_op(s, GetAreavar()))
check("Square perim", 40.0, Do_op(s, GetPerimetervar()))
// Modify one of the variables
SetAreavar(perim_pt)
check("Square perimeter", 40.0, Do_op(s, GetAreavar()))
// Try the constants
_ = AREAPT
_ = PERIMPT
_ = NULLPT
check("Square area ", 100.0, Do_op(s, AREAPT))
check("Square perim", 40.0, Do_op(s, PERIMPT))
}
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