class RatStr is Allomorph is Rat {}

RatStr is a dual value type, a subclass of both Allomorph, hence Str, and Rat.

See Allomorph for further details.

my $rat-str = <42.1>;
say $rat-str.^name;       # OUTPUT: «RatStr␤» 
 
my Rat $rat = $rat-str;   # OK! 
my Str $str = $rat-str;   # OK! 
 
# ∈ operator cares about object identity 
say 42.1  <42.1  55  1># OUTPUT: «False␤» 

Methods§

method new§

method new(Rat $iStr $s)

The constructor requires both the Rat and the Str value, when constructing one directly the values can be whatever is required:

my $f = RatStr.new(42.1"forty two and a bit");
say +$f# OUTPUT: «42.1␤» 
say ~$f# OUTPUT: «"forty two and a bit"␤»

method Capture§

method Capture(RatStr:D: --> Capture:D)

Equivalent to Mu.Capture.

method Numeric§

multi method Numeric(RatStr:D: --> Rat:D)
multi method Numeric(RatStr:U: --> Rat:D)

The :D variant returns the numeric portion of the invocant. The :U variant issues a warning about using an uninitialized value in numeric context and then returns value 0.0.

method Rat§

method Rat

Returns the Rat value of the RatStr.

method Real§

multi method Real(Real:D: --> Rat:D)
multi method Real(Real:U: --> Rat:D)

The :D variant returns the numeric portion of the invocant. The :U variant issues a warning about using an uninitialized value in numeric context and then returns value 0.0.

Operators§

infix ===§

multi sub infix:<===>(RatStr:D $aRatStr:D $b)

RatStr Value identity operator. Returns True if the Rat values of $a and $b are identical and their Str values are also identical. Returns False otherwise.

Typegraph§

Type relations for RatStr
raku-type-graph RatStr RatStr Allomorph Allomorph RatStr->Allomorph Rat Rat RatStr->Rat Mu Mu Any Any Any->Mu Cool Cool Cool->Any Stringy Stringy Str Str Str->Cool Str->Stringy Allomorph->Str Numeric Numeric Real Real Real->Numeric Rational Rational Rational->Real Rat->Cool Rat->Rational

Expand chart above