@equals(a, b)

This returns true if a and b are strictly equal.

This can be useful, for example, in templates:

// earth.ori
(region) =>
  `The earth's circumference is 40,075 km. ${
    @if(@equals(region, "US"), "(For you Americans, that's 24,901 miles.)")
  }`
$ ori earth.ori/GB
The earth's circumference is 40,075 km. 
$ ori earth.ori/US
The earth's circumference is 40,075 km. (For you Americans, that's 24,901 miles.)