Armstrong
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# Standard Raku:
say { $_ == sum .comb.map: * **3 }(371); # True
say { $_ == sum .comb »**»3 }(371); # True
# Raku with some setup:
constant λ = *;
say { my \it = $_; it==sum .comb.map: λ**3 }(371); # True
say { my \it = $_; it==sum .comb »**» 3 }(371); # True
Raku
INFO