From type/StrDistance

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This is actually a class attribute, and called as a method returns the string before the transformation:

say $str-dist.before; # OUTPUT: «fold␤» 

From language/operators

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multi sub infix:<before>(Any,       Any)
multi sub infix:<before>(Real:D,    Real:D)
multi sub infix:<before>(Str:D,     Str:D)
multi sub infix:<before>(Version:D, Version:D)

Generic ordering, uses the same semantics as cmp. Returns True if the first argument is smaller than the second.