Coerce with Rational and Complex

Ruby Development
1

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p 1.coerce(Rational(1, 2))  #=> [0.5, 1.0]

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p 1.coerce(Complex(1, 1))   #=> can't convert 1+1i into Integer

[Complex(1, 0), Complex(1, 1)] e$B$,M_$7$$5$J,$G$9!#e(B

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2

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[Complex(1, 0), Complex(1, 1)] e$B$,M_$7$$5$J,$G$9!#e(B

e$B86B’$H$7$F!"e(Bcoerce
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1.coerce(Rational(1,2))
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3

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08/04/22 e$B$Ke(B Shin-ichiro HARA[email protected]
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p 1.coerce(Complex(1, 1))   #=> can't convert 1+1i into Integer

[Complex(1, 0), Complex(1, 1)] e$B$,M_$7$$5$J,$G$9!#e(B

e$B86B’$H$7$F!"e(Bcoerce e$B$O!"e(B(e$B?7$7$$?te(B).coerce(e$B8E$$?t!K$N$_$,LdBj$J$N$G!"e(B
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Index: numeric.c

— numeric.c (revision 16157)
+++ numeric.c (working copy)
@@ -97,6 +97,8 @@
}

+static int do_coerce(VALUE *x, VALUE y, int err);
+
/

  • call-seq:
  • num.coerce(numeric)   => array

@@ -116,9 +118,14 @@
static VALUE
num_coerce(VALUE x, VALUE y)
{

  • static int recurse = 0;
    if (CLASS_OF(x) == CLASS_OF(y))
    return rb_assoc_new(y, x);
  • return rb_assoc_new(rb_Float(y), rb_Float(x));
  • if (recurse) return Qnil;
  • recurse++;
  • do_coerce(&x, &y, Qtrue);
  • recurse–;
  • return rb_assoc_new(y, x);
    }

static VALUE