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[DOC] Stop mentioning Qfalse==0 for C extensions

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See [Feature #18397] for detail. Follow up for
b859397e1b.

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Co-authored-by: Koichi Sasada <ko1@atdot.net>
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Alan Wu 2021-12-09 13:38:20 -05:00 • committed by GitHub
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Notes: git 2021-12-10 03:38:41 +09:00 
Merged: https://github.com/ruby/ruby/pull/5240

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@ -617,12 +617,14 @@ C言語とRubyの間で情報を共有する方法について解説します．
Qtrue ::
Qfalse ::
真偽値．QfalseはC言語でも偽とみなされます(つまり0)．
真偽値．C言語から見た「true」と「false」．
Qnil ::
C言語から見た「nil」．
RTEST(obj)というマクロはobjがQfalseかQnilのとき0を返します．
=== CとRubyで共有される大域変数
CとRubyで大域変数を使って情報を共有できます．共有できる大域