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| -rw-r--r-- | NEWS | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -158,7 +158,8 @@ with all sufficient information, see the ChangeLog file or Redmine So obj.kind_of?(Fixnum) works as obj.kind_of?(Integer). At C-level, Fixnum object and Bignum object should be distinguished by FIXNUM_P(obj) and RB_TYPE_P(obj, T_BIGNUM). - RUBY_INTEGER_UNIFICATION can be used to detect this feature. + RUBY_INTEGER_UNIFICATION can be used to detect this feature at C-level. + 0.class == Integer can be used to detect this feature at Ruby-level. ruby-2.4.0-preview1 (temporally) removes rb_cFixnum and rb_cBignum to check the effect of incompatibility. (rb_cFixnum and rb_cBignum may be defined as rb_cInteger later if |