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Record test := build { field : nat }.
Record test_r := build_r { field_r : nat }.
Record test_c := build_c { field_c : nat }.
Add Printing Constructor test_c.
Add Printing Record test_r.
Set Printing Records.
Check build 5.
Check {| field := 5 |}.
Check build_r 5.
Check build_c 5.
Unset Printing Records.
Check build 5.
Check {| field := 5 |}.
Check build_r 5.
Check build_c 5.
Record N := C { T : Type; _ : True }.
Check fun x:N => let 'C _ p := x in p.
Check fun x:N => let 'C T _ := x in T.
Check fun x:N => let 'C T p := x in (T,p).
Record M := D { U : Type; a := 0; q : True }.
Check fun x:M => let 'D T _ p := x in p.
Check fun x:M => let 'D T _ p := x in T.
Check fun x:M => let 'D T p := x in (T,p).
Check fun x:M => let 'D T a p := x in (T,p,a).
Check fun x:M => let '{|U:=T;a:=a;q:=p|} := x in (T,p,a).
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