Use OnceCell for Value string_rep

wduquette / molt

Embeddable TCL Interpreter for Rust applications

BSD 3-Clause "New" or "Revised" License

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Use OnceCell for Value string_rep #40

Closed wduquette closed 4 years ago

wduquette commented 4 years ago

This pull request revises the internals of the Value type. The string_rep is now contained within a OnceCell, to minimize the access costs on subsequent reads. Only the data_rep is now contained in a RefCell.