When I need to return immutable collection from my class in C# or Java I return it as IEnumerable interface. What is the standard way for this in Ruby? Clone? Freeze?
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When I need to return immutable collection from my class in C# or Java I return it as IEnumerable interface. What is the standard way for this in Ruby? Clone? Freeze?
If you want a
RuntimeErrorraised if modification is attempted, then usefreeze(). If you only want to prevent the caller from modifying your data, thenclone()is a good choice.Keep in mind that freeze() might not work like you expect.
Personally, I’ve never had need for
freeze(), butclone()is often useful.