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author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-01-09 17:34:39 +0000 |
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committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-01-09 17:34:39 +0000 |
commit | 705f9a7e809d47fa7e4e94196c2ffd1e5a74dd1e (patch) | |
tree | 1985242d90a9892e06e01ebf2f11fb4be5db5786 /gc.c | |
parent | cc366241ce89ee2397b9c203b5798b9f197a293d (diff) | |
download | ruby-705f9a7e809d47fa7e4e94196c2ffd1e5a74dd1e.tar.gz |
* gc.c: Supplement object_id's rdoc for immediate and frozen string litterals
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44547 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'gc.c')
-rw-r--r-- | gc.c | 10 |
1 files changed, 10 insertions, 0 deletions
@@ -2339,6 +2339,16 @@ id2ref(VALUE obj, VALUE objid) * * The same number will be returned on all calls to +object_id+ for a given object, * and no two active objects will share an id. + * + * Note that some objects of builtin classes are reused for optimization. + * This is the case for immediate values and frozen string litterals. + * Immediate values are not passed by reference by are passed by value: + * +nil+, +true+, +false+, Fixnums. Some Floats may be immediates too. + * + * Object.new.object_id == Object.new.object_id # => false + * (21 * 2).object_id == (21 * 2).object_id # => true + * "hello".object_id == "hello".object_id # => false + * "hi".freeze.object_id == "hi".freeze.object_id # => true */ /* |