String

TODO

  • Strings are mutable objects.

  • Each string in a Ruby program is its own object, with its own unique location in memory, even if the strings are identical.

  • But if you reference the same symbol multiple times, you’re referencing the same object everywhere in your program, which means you’re referencing the same memory location.

Compare 2 strings:#

  • Ruby will have to compare contents of strings, character by character.

String as hash keys:#

  • Ruby will have to generate hash code character by character.
  • But with symbol, Ruby can compare 2 symbols and generate their hashcode extremely quickly.
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