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module template_01_m
implicit none
private
public :: op_t
requirement semigroup(t, combine)
type, deferred :: t
elemental function combine(x, y) result(combined)
type(t), intent(in) :: x, y
type(t) :: combined
end function
end requirement
requirement extended_semigroup(t, combine, sconcat, stimes)
require :: semigroup(t, scombine)
pure function sconcat(list) result(combined)
type(t), intent(in) :: list(:)
type(t) :: combined
end function
elemental function stimes(n, a) result(repeated)
integer, intent(in) :: n
type(t), intent(in) :: a
type(t) :: repeated
end function
end requirement
contains
subroutine test_template()
end subroutine
end module
program template_01
use template_01_m
implicit none
end program template_01
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