Appending to an existing string

Question

To append to an existing string this is what I am doing   s    hello  s gsub         world      Is there a better way to append to an existing string   Before someone suggests following answer lemme show that this one does not work  s    hello  s object id s   s     world  s object id    In the above case object id will be different for two cases

User · Answer

Here s another way   fist segment    hello   second segment    world   complete string      first segment    second segment

User · Answer

you can also use the following   s concat  world

User · Answer

You can use  lt  lt  to append to a string in-place   s    foo  old id   s object id s  lt  lt   bar  s                         gt   foobar  s object id    old id     gt  true

User · Answer

Can I ask why this is important   I know that this is not a direct answer to your question  but the fact that you are trying to preserve the object ID of a string might indicate that you should look again at what you are trying to do     You might find  for instance  that relying on the object ID of a string will lead to bugs that are quite hard to track down

User · Answer

Yet an other way   s insert -1    world

[ruby] Appending to an existing string

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