Performance of the Wren programming language
SMRTR summary
Wren is a bytecode-interpreted scripting language that outperforms Python, Ruby, and Lua in several benchmarks. Its speed comes from smart design choices: NaN tagging for compact 8-byte values, fixed class layouts enabling compile-time field offsets, copy-down inheritance for fast method dispatch, and computed gotos for better CPU branch prediction. These decisions trade dynamic flexibility for measurable performance gains.
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