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  1. stockfish_response <- c("Final evaluation +0.30 (white side) [with scaled NNUE, hybrid, ...]","blah")
  2.  
  3. regmatches(stockfish_response, regexpr("Final evaluation.+?\\(white side\\)", stockfish_response))
  4.  
  5. library(stringr)
  6. final_evaluation <- str_extract(stockfish_response, 'Final evaluation.+?\\(white side\\)')
  7. final_evaluation <- final_evaluation[!is.na(final_evaluation)]
  8. final_evaluation
  9.  
Success #stdin #stdout 0.28s 42216KB
stdin
Standard input is empty
stdout
[1] "Final evaluation +0.30 (white side)"
[1] "Final evaluation +0.30 (white side)"