What is the difference between a character and a string? Where it is possible, where it is necessary to use symbols instead of lines?

Question

ruby

The question arose, what is the difference between a string and a character in Ruby? Of course, I realized that two identical strings are two different objects, that object_idthey will have different, then that two identical characters are two identical objects that have a single one object_id, and that it is stored in memory once, "without rollback", then that a character is an immutable string, and so on. etc. But are these really all "properties" of a symbol in Ruby?
From the first question, the second follows: where can you use symbols, where can you replace strings with symbols, where do you need to do this, where is it convenient?

Answer 1

You understood the differences correctly, symbols are usually used as keys in a hash (eg { key: 'value' } instead of {'key' => 'value' }).
Here is an extended question to both of your questions: stackoverflow.com/questions/16621073/when-to-use-s...