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* range.c (range_cover): new method Range#cover? added. the

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method name might be changed.  thanks to takano32 at
  http://www.rubyist.net/~matz/20051210.html#c08 for name
  suggestion.  [ruby-talk:167182]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9674 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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matz 2005-12-12 01:01:29 +00:00
parent 4d467a0865
commit 81be039884
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7
ChangeLog
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@ -1,3 +1,10 @@
Mon Dec 12 09:58:09 2005 Yukihiro Matsumoto <matz@ruby-lang.org>
* range.c (range_cover): new method Range#cover? added. the
method name might be changed. thanks to takano32 at
http://www.rubyist.net/~matz/20051210.html#c08 for name
suggestion. [ruby-talk:167182]
Mon Dec 12 00:33:56 2005 Yukihiro Matsumoto <matz@ruby-lang.org>
* ext/digest/digest.c (rb_digest_base_s_digest): add volatile to

33
range.c
View file

@ -641,6 +641,38 @@ range_include(VALUE range, VALUE val)
}
/*
* call-seq:
* rng.cover?(val) => true or false
*
* Returns <code>true</code> if <i>obj</i> is between beg and end,
* i.e <code>beg <= obj <= end</code> (or <i>end</i> exclusive when
* <code>exclude_end?</code> is true).
*
* ("a".."z").cover?("c") #=> true
* ("a".."z").cover?("5") #=> false
*/
static VALUE
range_cover(range, val)
VALUE range, val;
{
VALUE beg, end;
beg = rb_ivar_get(range, id_beg);
end = rb_ivar_get(range, id_end);
if (r_le(beg, val)) {
if (EXCL(range)) {
if (r_lt(val, end)) return Qtrue;
}
else {
if (r_le(val, end)) return Qtrue;
}
}
return Qfalse;
}
/* A <code>Range</code> represents an interval---a set of values with a
* start and an end. Ranges may be constructed using the
* <em>s</em><code>..</code><em>e</em> and
@ -718,6 +750,7 @@ Init_Range(void)
rb_define_method(rb_cRange, "member?", range_include, 1);
rb_define_method(rb_cRange, "include?", range_include, 1);
rb_define_method(rb_cRange, "cover?", range_cover, 1);
id_cmp = rb_intern("<=>");
id_succ = rb_intern("succ");