Combined from primary sources listed below.
See primary docmentation in context for routine tc.
multi tc(Str:D --> Str:D)
multi method tc(Str:D: --> Str:D)
Does a Unicode "titlecase" operation, that is changes the first character in the string to titlecase, or to uppercase if the character has no titlecase mapping.
See primary docmentation in context for routine tc.
sub tc(Str(Cool))
method tc()
Coerces the invocant (or in sub form, its argument) to Str, and returns it with the first letter case-folded to titlecase (or where not available, uppercase).
say "abC".tc; # OUTPUT: «AbC»
See primary docmentation in context for method tc.