R for processing large data problem

Now, I have a million-level genomic data at hand, and I want to split a string variable in it. So, I want to ask whether there are any available functions or packages in R that can efficiently handle big data involving strings?

Indeed - check out the {stringr} package (part of the tidyverse). If you need some specific help with a problem, please remember to provide a reprex (minimum reproducible example) of your data.

Maybe also take a look at Bigger data in case your data is larger than your physical memory.

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