OSR » Immutable strings

The mutable string situation

Since the first version, OCaml has mutable strings. With time and the hindsight provided by numerous languages with immutable strings, this design decision has begun to be seen by many developers as wrong. As pointed out by Xavier Leroy, however, it is now impossible to come back on that decision and fully root out mutable strings from the language. However, new data structures may be added, made comfortable for general use and documented as being the new standard.

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